diff --git a/src/autorouter/autorouter.rs b/src/autorouter/autorouter.rs
index fec2c5a..a9fd35f 100644
--- a/src/autorouter/autorouter.rs
+++ b/src/autorouter/autorouter.rs
@@ -103,7 +103,7 @@ impl<M: AccessMesadata> Autorouter<M> {
             .node_index()
         {
             RatvertexIndex::FixedDot(dot) => dot,
-            RatvertexIndex::Zone(zone) => self.board.zone_apex(zone),
+            RatvertexIndex::Poly(poly) => self.board.poly_apex(poly),
         };
 
         let target_dot = match self
@@ -114,7 +114,7 @@ impl<M: AccessMesadata> Autorouter<M> {
             .node_index()
         {
             RatvertexIndex::FixedDot(dot) => dot,
-            RatvertexIndex::Zone(zone) => self.board.zone_apex(zone),
+            RatvertexIndex::Poly(poly) => self.board.poly_apex(poly),
         };
 
         (source_dot, target_dot)
diff --git a/src/autorouter/ratsnest.rs b/src/autorouter/ratsnest.rs
index 5bf9899..5fd7727 100644
--- a/src/autorouter/ratsnest.rs
+++ b/src/autorouter/ratsnest.rs
@@ -21,7 +21,7 @@ use crate::{
     geometry::{compound::ManageCompounds, shape::AccessShape},
     graph::{GenericIndex, GetPetgraphIndex},
     layout::{
-        zone::{MakePolyShape, ZoneWeight},
+        poly::{MakePolyShape, PolyWeight},
         Layout,
     },
     triangulation::{GetTrianvertexNodeIndex, Triangulation},
@@ -31,14 +31,14 @@ use crate::{
 #[derive(Debug, Clone, Copy, PartialEq)]
 pub enum RatvertexIndex {
     FixedDot(FixedDotIndex),
-    Zone(GenericIndex<ZoneWeight>),
+    Poly(GenericIndex<PolyWeight>),
 }
 
 impl From<RatvertexIndex> for crate::layout::NodeIndex {
     fn from(vertex: RatvertexIndex) -> crate::layout::NodeIndex {
         match vertex {
             RatvertexIndex::FixedDot(dot) => crate::layout::NodeIndex::Primitive(dot.into()),
-            RatvertexIndex::Zone(zone) => crate::layout::NodeIndex::Compound(zone.into()),
+            RatvertexIndex::Poly(poly) => crate::layout::NodeIndex::Compound(poly.into()),
         }
     }
 }
@@ -89,7 +89,7 @@ impl Ratsnest {
             for node in layout.drawing().layer_primitive_nodes(layer) {
                 match node {
                     PrimitiveIndex::FixedDot(dot) => {
-                        if layout.zones(dot).next().is_none() {
+                        if layout.polys(dot).next().is_none() {
                             if let Some(net) = layout.drawing().primitive(dot).maybe_net() {
                                 if !triangulations.contains_key(&(layer, net)) {
                                     triangulations.insert(
@@ -113,8 +113,8 @@ impl Ratsnest {
                 }
             }
 
-            for zone in layout.layer_zone_nodes(layer) {
-                if let Some(net) = layout.drawing().compound_weight(zone.into()).maybe_net() {
+            for poly in layout.layer_poly_nodes(layer) {
+                if let Some(net) = layout.drawing().compound_weight(poly.into()).maybe_net() {
                     if !triangulations.contains_key(&(layer, net)) {
                         triangulations.insert(
                             (layer, net),
@@ -126,8 +126,8 @@ impl Ratsnest {
                         .get_mut(&(layer, net))
                         .unwrap()
                         .add_vertex(RatvertexWeight {
-                            vertex: RatvertexIndex::Zone(zone),
-                            pos: layout.zone(zone).shape().center(),
+                            vertex: RatvertexIndex::Poly(poly),
+                            pos: layout.poly(poly).shape().center(),
                         })?
                 }
             }
diff --git a/src/autorouter/selection.rs b/src/autorouter/selection.rs
index bae8040..971eda9 100644
--- a/src/autorouter/selection.rs
+++ b/src/autorouter/selection.rs
@@ -7,7 +7,7 @@ use crate::{
     drawing::graph::{GetLayer, MakePrimitive},
     geometry::compound::ManageCompounds,
     graph::{GenericIndex, GetPetgraphIndex},
-    layout::{zone::ZoneWeight, CompoundWeight, NodeIndex},
+    layout::{poly::PolyWeight, CompoundWeight, NodeIndex},
 };
 
 #[derive(Debug, Clone, Hash, Eq, PartialEq, Serialize, Deserialize)]
@@ -66,11 +66,11 @@ impl Selection {
                 primitive.primitive(board.layout().drawing()).layer()
             }
             NodeIndex::Compound(compound) => {
-                if let CompoundWeight::Zone(..) = board.layout().drawing().compound_weight(compound)
+                if let CompoundWeight::Poly(..) = board.layout().drawing().compound_weight(compound)
                 {
                     board
                         .layout()
-                        .zone(GenericIndex::<ZoneWeight>::new(compound.petgraph_index()))
+                        .poly(GenericIndex::<PolyWeight>::new(compound.petgraph_index()))
                         .layer()
                 } else {
                     unreachable!()
diff --git a/src/bin/topola-egui/app.rs b/src/bin/topola-egui/app.rs
index 0dc40d1..6ccc4a6 100644
--- a/src/bin/topola-egui/app.rs
+++ b/src/bin/topola-egui/app.rs
@@ -29,7 +29,7 @@ use topola::{
         shape::AccessShape,
         GenericNode,
     },
-    layout::{via::ViaWeight, zone::MakePolyShape, Layout},
+    layout::{poly::MakePolyShape, via::ViaWeight, Layout},
     math::Circle,
     router::{
         draw::DrawException,
diff --git a/src/bin/topola-egui/overlay.rs b/src/bin/topola-egui/overlay.rs
index cedc5ce..531b890 100644
--- a/src/bin/topola-egui/overlay.rs
+++ b/src/bin/topola-egui/overlay.rs
@@ -17,8 +17,8 @@ use topola::{
     },
     graph::{GenericIndex, GetPetgraphIndex},
     layout::{
+        poly::{MakePolyShape, Poly, PolyWeight},
         via::ViaWeight,
-        zone::{MakePolyShape, Zone, ZoneWeight},
         CompoundWeight, Layout, NodeIndex,
     },
 };
@@ -76,9 +76,9 @@ impl Overlay {
             }
             NodeIndex::Compound(compound) => {
                 match board.layout().drawing().compound_weight(compound) {
-                    CompoundWeight::Zone(weight) => board
+                    CompoundWeight::Poly(weight) => board
                         .layout()
-                        .zone(GenericIndex::<ZoneWeight>::new(compound.petgraph_index()))
+                        .poly(GenericIndex::<PolyWeight>::new(compound.petgraph_index()))
                         .shape()
                         .into(),
                     CompoundWeight::Via(weight) => board
diff --git a/src/bin/topola-egui/viewport.rs b/src/bin/topola-egui/viewport.rs
index 9ecba75..9d699cc 100644
--- a/src/bin/topola-egui/viewport.rs
+++ b/src/bin/topola-egui/viewport.rs
@@ -14,7 +14,7 @@ use topola::{
         primitive::MakePrimitiveShape,
     },
     geometry::{shape::AccessShape, GenericNode},
-    layout::{via::ViaWeight, zone::MakePolyShape},
+    layout::{poly::MakePolyShape, via::ViaWeight},
     math::Circle,
     specctra::mesadata::SpecctraMesadata,
 };
@@ -126,17 +126,17 @@ impl Viewport {
                                         painter.paint_primitive(&shape, color);
                                     }
 
-                                    for zone in board.layout().layer_zone_nodes(i) {
+                                    for poly in board.layout().layer_poly_nodes(i) {
                                         let color = if overlay
                                             .selection()
-                                            .contains_node(board, GenericNode::Compound(zone.into()))
+                                            .contains_node(board, GenericNode::Compound(poly.into()))
                                         {
                                             layers.highlight_colors[i]
                                         } else {
                                             layers.colors[i]
                                         };
 
-                                        painter.paint_polygon(&board.layout().zone(zone).shape().polygon, color)
+                                        painter.paint_polygon(&board.layout().poly(poly).shape().polygon, color)
                                     }
                                 }
                             }
diff --git a/src/bin/topola-sdl2-demo/main.rs b/src/bin/topola-sdl2-demo/main.rs
index d7c05e9..472579f 100644
--- a/src/bin/topola-sdl2-demo/main.rs
+++ b/src/bin/topola-sdl2-demo/main.rs
@@ -23,7 +23,7 @@ use topola::drawing::seg::FixedSegWeight;
 use topola::drawing::{Infringement, LayoutException};
 use topola::geometry::primitive::{AccessPrimitiveShape, PrimitiveShape};
 use topola::geometry::shape::AccessShape;
-use topola::layout::zone::MakePolyShape;
+use topola::layout::poly::MakePolyShape;
 use topola::layout::Layout;
 use topola::router::draw::DrawException;
 use topola::router::navmesh::Navmesh;
@@ -303,9 +303,9 @@ fn render_times(
             painter.paint_primitive(&shape, color, view.zoom);
         }
 
-        for zone in layout.layer_zone_nodes(1) {
+        for poly in layout.layer_poly_nodes(1) {
             painter.paint_polygon(
-                &layout.zone(zone).shape().polygon,
+                &layout.poly(poly).shape().polygon,
                 ColorU::new(52, 52, 200, 255),
                 view.zoom,
             );
@@ -322,9 +322,9 @@ fn render_times(
             painter.paint_primitive(&shape, color, view.zoom);
         }
 
-        for zone in layout.layer_zone_nodes(0) {
+        for poly in layout.layer_poly_nodes(0) {
             painter.paint_polygon(
-                &layout.zone(zone).shape().polygon,
+                &layout.poly(poly).shape().polygon,
                 ColorU::new(200, 52, 52, 255),
                 view.zoom,
             );
diff --git a/src/board/board.rs b/src/board/board.rs
index 6beb0a5..d9f6936 100644
--- a/src/board/board.rs
+++ b/src/board/board.rs
@@ -11,7 +11,7 @@ use crate::{
     geometry::{shape::AccessShape, GenericNode},
     graph::GenericIndex,
     layout::{
-        zone::{GetMaybeApex, MakePolyShape, ZoneWeight},
+        poly::{GetMaybeApex, MakePolyShape, PolyWeight},
         Layout, NodeIndex,
     },
     math::Circle,
@@ -49,14 +49,14 @@ impl<M: AccessMesadata> Board<M> {
         dot
     }
 
-    pub fn add_zone_fixed_dot_infringably(
+    pub fn add_poly_fixed_dot_infringably(
         &mut self,
         weight: FixedDotWeight,
-        zone: GenericIndex<ZoneWeight>,
+        poly: GenericIndex<PolyWeight>,
     ) -> FixedDotIndex {
-        let dot = self.layout.add_zone_fixed_dot_infringably(weight, zone);
+        let dot = self.layout.add_poly_fixed_dot_infringably(weight, poly);
 
-        if let Some(pin) = self.node_pinname(GenericNode::Compound(zone.into())) {
+        if let Some(pin) = self.node_pinname(GenericNode::Compound(poly.into())) {
             self.node_to_pinname
                 .insert(GenericNode::Primitive(dot.into()), pin.to_string());
         }
@@ -81,18 +81,18 @@ impl<M: AccessMesadata> Board<M> {
         seg
     }
 
-    pub fn add_zone_fixed_seg_infringably(
+    pub fn add_poly_fixed_seg_infringably(
         &mut self,
         from: FixedDotIndex,
         to: FixedDotIndex,
         weight: FixedSegWeight,
-        zone: GenericIndex<ZoneWeight>,
+        poly: GenericIndex<PolyWeight>,
     ) -> FixedSegIndex {
         let seg = self
             .layout
-            .add_zone_fixed_seg_infringably(from, to, weight, zone);
+            .add_poly_fixed_seg_infringably(from, to, weight, poly);
 
-        if let Some(pin) = self.node_pinname(GenericNode::Compound(zone.into())) {
+        if let Some(pin) = self.node_pinname(GenericNode::Compound(poly.into())) {
             self.node_to_pinname
                 .insert(GenericNode::Primitive(seg.into()), pin.to_string());
         }
@@ -100,35 +100,35 @@ impl<M: AccessMesadata> Board<M> {
         seg
     }
 
-    pub fn add_zone(
+    pub fn add_poly(
         &mut self,
-        weight: ZoneWeight,
+        weight: PolyWeight,
         maybe_pin: Option<String>,
-    ) -> GenericIndex<ZoneWeight> {
-        let zone = self.layout.add_zone(weight);
+    ) -> GenericIndex<PolyWeight> {
+        let poly = self.layout.add_poly(weight);
 
         if let Some(pin) = maybe_pin {
             self.node_to_pinname
-                .insert(GenericNode::Compound(zone.into()), pin.to_string());
+                .insert(GenericNode::Compound(poly.into()), pin.to_string());
         }
 
-        zone
+        poly
     }
 
-    pub fn zone_apex(&mut self, zone: GenericIndex<ZoneWeight>) -> FixedDotIndex {
-        if let Some(apex) = self.layout.zone(zone).maybe_apex() {
+    pub fn poly_apex(&mut self, poly: GenericIndex<PolyWeight>) -> FixedDotIndex {
+        if let Some(apex) = self.layout.poly(poly).maybe_apex() {
             apex
         } else {
-            self.add_zone_fixed_dot_infringably(
+            self.add_poly_fixed_dot_infringably(
                 FixedDotWeight {
                     circle: Circle {
-                        pos: self.layout.zone(zone).shape().center(),
+                        pos: self.layout.poly(poly).shape().center(),
                         r: 100.0,
                     },
-                    layer: self.layout.zone(zone).layer(),
-                    maybe_net: self.layout.zone(zone).maybe_net(),
+                    layer: self.layout.poly(poly).layer(),
+                    maybe_net: self.layout.poly(poly).maybe_net(),
                 },
-                zone,
+                poly,
             )
         }
     }
diff --git a/src/layout/layout.rs b/src/layout/layout.rs
index 85268ed..fe0b87b 100644
--- a/src/layout/layout.rs
+++ b/src/layout/layout.rs
@@ -25,15 +25,15 @@ use crate::{
     },
     graph::{GenericIndex, GetPetgraphIndex},
     layout::{
+        poly::{Poly, PolyWeight},
         via::{Via, ViaWeight},
-        zone::{Zone, ZoneWeight},
     },
 };
 
 #[derive(Debug, Clone, Copy)]
 #[enum_dispatch(GetMaybeNet)]
 pub enum CompoundWeight {
-    Zone(ZoneWeight),
+    Poly(PolyWeight),
     Via(ViaWeight),
 }
 
@@ -107,27 +107,27 @@ impl<R: AccessRules> Layout<R> {
         self.drawing.add_fixed_dot_infringably(weight)
     }
 
-    pub fn add_zone_fixed_dot(
+    pub fn add_poly_fixed_dot(
         &mut self,
         weight: FixedDotWeight,
-        zone: GenericIndex<ZoneWeight>,
+        poly: GenericIndex<PolyWeight>,
     ) -> Result<FixedDotIndex, Infringement> {
         let maybe_dot = self.drawing.add_fixed_dot(weight);
 
         if let Ok(dot) = maybe_dot {
-            self.drawing.add_to_compound(dot, zone.into());
+            self.drawing.add_to_compound(dot, poly.into());
         }
 
         maybe_dot
     }
 
-    pub fn add_zone_fixed_dot_infringably(
+    pub fn add_poly_fixed_dot_infringably(
         &mut self,
         weight: FixedDotWeight,
-        zone: GenericIndex<ZoneWeight>,
+        poly: GenericIndex<PolyWeight>,
     ) -> FixedDotIndex {
         let dot = self.drawing.add_fixed_dot_infringably(weight);
-        self.drawing.add_to_compound(dot, zone.into());
+        self.drawing.add_to_compound(dot, poly.into());
         dot
     }
 
@@ -149,31 +149,31 @@ impl<R: AccessRules> Layout<R> {
         self.drawing.add_fixed_seg_infringably(from, to, weight)
     }
 
-    pub fn add_zone_fixed_seg(
+    pub fn add_poly_fixed_seg(
         &mut self,
         from: FixedDotIndex,
         to: FixedDotIndex,
         weight: FixedSegWeight,
-        zone: GenericIndex<ZoneWeight>,
+        poly: GenericIndex<PolyWeight>,
     ) -> Result<FixedSegIndex, Infringement> {
         let maybe_seg = self.add_fixed_seg(from, to, weight);
 
         if let Ok(seg) = maybe_seg {
-            self.drawing.add_to_compound(seg, zone.into());
+            self.drawing.add_to_compound(seg, poly.into());
         }
 
         maybe_seg
     }
 
-    pub fn add_zone_fixed_seg_infringably(
+    pub fn add_poly_fixed_seg_infringably(
         &mut self,
         from: FixedDotIndex,
         to: FixedDotIndex,
         weight: FixedSegWeight,
-        zone: GenericIndex<ZoneWeight>,
+        poly: GenericIndex<PolyWeight>,
     ) -> FixedSegIndex {
         let seg = self.add_fixed_seg_infringably(from, to, weight);
-        self.drawing.add_to_compound(seg, zone.into());
+        self.drawing.add_to_compound(seg, poly.into());
         seg
     }
 
@@ -199,10 +199,10 @@ impl<R: AccessRules> Layout<R> {
         self.drawing.move_dot(dot, to)
     }
 
-    pub fn add_zone(&mut self, weight: ZoneWeight) -> GenericIndex<ZoneWeight> {
-        GenericIndex::<ZoneWeight>::new(
+    pub fn add_poly(&mut self, weight: PolyWeight) -> GenericIndex<PolyWeight> {
+        GenericIndex::<PolyWeight>::new(
             self.drawing
-                .add_compound(CompoundWeight::Zone(weight))
+                .add_compound(CompoundWeight::Poly(weight))
                 .petgraph_index(),
         )
     }
@@ -243,18 +243,18 @@ impl<R: AccessRules> Layout<R> {
         }
     }
 
-    pub fn zones<W: 'static>(
+    pub fn polys<W: 'static>(
         &self,
         node: GenericIndex<W>,
     ) -> impl Iterator<Item = GenericIndex<CompoundWeight>> + '_ {
         self.drawing.compounds(node)
     }
 
-    pub fn zone_nodes(&self) -> impl Iterator<Item = GenericIndex<ZoneWeight>> + '_ {
+    pub fn poly_nodes(&self) -> impl Iterator<Item = GenericIndex<PolyWeight>> + '_ {
         self.drawing.rtree().iter().filter_map(|wrapper| {
             if let NodeIndex::Compound(compound) = wrapper.data {
-                if let CompoundWeight::Zone(..) = self.drawing.compound_weight(compound) {
-                    return Some(GenericIndex::<ZoneWeight>::new(compound.petgraph_index()));
+                if let CompoundWeight::Poly(..) = self.drawing.compound_weight(compound) {
+                    return Some(GenericIndex::<PolyWeight>::new(compound.petgraph_index()));
                 }
             }
 
@@ -262,10 +262,10 @@ impl<R: AccessRules> Layout<R> {
         })
     }
 
-    pub fn layer_zone_nodes(
+    pub fn layer_poly_nodes(
         &self,
         layer: usize,
-    ) -> impl Iterator<Item = GenericIndex<ZoneWeight>> + '_ {
+    ) -> impl Iterator<Item = GenericIndex<PolyWeight>> + '_ {
         self.drawing
             .rtree()
             .locate_in_envelope_intersecting(&AABB::from_corners(
@@ -274,8 +274,8 @@ impl<R: AccessRules> Layout<R> {
             ))
             .filter_map(|wrapper| {
                 if let NodeIndex::Compound(compound) = wrapper.data {
-                    if let CompoundWeight::Zone(..) = self.drawing.compound_weight(compound) {
-                        return Some(GenericIndex::<ZoneWeight>::new(compound.petgraph_index()));
+                    if let CompoundWeight::Poly(..) = self.drawing.compound_weight(compound) {
+                        return Some(GenericIndex::<PolyWeight>::new(compound.petgraph_index()));
                     }
                 }
 
@@ -283,13 +283,13 @@ impl<R: AccessRules> Layout<R> {
             })
     }
 
-    pub fn zone_members(
+    pub fn poly_members(
         &self,
-        zone: GenericIndex<ZoneWeight>,
+        poly: GenericIndex<PolyWeight>,
     ) -> impl Iterator<Item = PrimitiveIndex> + '_ {
         self.drawing
             .geometry()
-            .compound_members(GenericIndex::new(zone.petgraph_index()))
+            .compound_members(GenericIndex::new(poly.petgraph_index()))
     }
 
     pub fn drawing(&self) -> &Drawing<CompoundWeight, R> {
@@ -304,8 +304,8 @@ impl<R: AccessRules> Layout<R> {
         self.drawing.rules_mut()
     }
 
-    pub fn zone(&self, index: GenericIndex<ZoneWeight>) -> Zone<R> {
-        Zone::new(index, self)
+    pub fn poly(&self, index: GenericIndex<PolyWeight>) -> Poly<R> {
+        Poly::new(index, self)
     }
 
     pub fn via(&self, index: GenericIndex<ViaWeight>) -> Via<R> {
diff --git a/src/layout/mod.rs b/src/layout/mod.rs
index a0ea8e6..21eca73 100644
--- a/src/layout/mod.rs
+++ b/src/layout/mod.rs
@@ -1,5 +1,5 @@
 mod layout;
+pub mod poly;
 pub mod via;
-pub mod zone;
 
 pub use layout::*;
diff --git a/src/layout/zone.rs b/src/layout/poly.rs
similarity index 73%
rename from src/layout/zone.rs
rename to src/layout/poly.rs
index f2c9fbd..5b5125a 100644
--- a/src/layout/zone.rs
+++ b/src/layout/poly.rs
@@ -26,13 +26,13 @@ pub trait GetMaybeApex {
 }
 
 #[derive(Debug)]
-pub struct Zone<'a, R: AccessRules> {
-    pub index: GenericIndex<ZoneWeight>,
+pub struct Poly<'a, R: AccessRules> {
+    pub index: GenericIndex<PolyWeight>,
     layout: &'a Layout<R>,
 }
 
-impl<'a, R: AccessRules> Zone<'a, R> {
-    pub fn new(index: GenericIndex<ZoneWeight>, layout: &'a Layout<R>) -> Self {
+impl<'a, R: AccessRules> Poly<'a, R> {
+    pub fn new(index: GenericIndex<PolyWeight>, layout: &'a Layout<R>) -> Self {
         Self { index, layout }
     }
 
@@ -48,9 +48,9 @@ impl<'a, R: AccessRules> Zone<'a, R> {
     }
 }
 
-impl<'a, R: AccessRules> GetLayer for Zone<'a, R> {
+impl<'a, R: AccessRules> GetLayer for Poly<'a, R> {
     fn layer(&self) -> usize {
-        if let CompoundWeight::Zone(weight) =
+        if let CompoundWeight::Poly(weight) =
             self.layout.drawing().compound_weight(self.index.into())
         {
             weight.layer()
@@ -60,7 +60,7 @@ impl<'a, R: AccessRules> GetLayer for Zone<'a, R> {
     }
 }
 
-impl<'a, R: AccessRules> GetMaybeNet for Zone<'a, R> {
+impl<'a, R: AccessRules> GetMaybeNet for Poly<'a, R> {
     fn maybe_net(&self) -> Option<usize> {
         self.layout
             .drawing()
@@ -69,7 +69,7 @@ impl<'a, R: AccessRules> GetMaybeNet for Zone<'a, R> {
     }
 }
 
-impl<'a, R: AccessRules> MakePolyShape for Zone<'a, R> {
+impl<'a, R: AccessRules> MakePolyShape for Poly<'a, R> {
     fn shape(&self) -> PolyShape {
         PolyShape {
             polygon: Polygon::new(
@@ -103,7 +103,7 @@ impl<'a, R: AccessRules> MakePolyShape for Zone<'a, R> {
     }
 }
 
-impl<'a, R: AccessRules> GetMaybeApex for Zone<'a, R> {
+impl<'a, R: AccessRules> GetMaybeApex for Poly<'a, R> {
     fn maybe_apex(&self) -> Option<FixedDotIndex> {
         self.layout
             .drawing()
@@ -123,61 +123,61 @@ impl<'a, R: AccessRules> GetMaybeApex for Zone<'a, R> {
 
 #[enum_dispatch(GetLayer, GetMaybeNet)]
 #[derive(Debug, Clone, Copy, PartialEq)]
-pub enum ZoneWeight {
-    Solid(SolidZoneWeight),
-    Pour(PourZoneWeight),
+pub enum PolyWeight {
+    Solid(SolidPolyWeight),
+    Pour(PourPolyWeight),
 }
 
-impl From<GenericIndex<ZoneWeight>> for GenericIndex<CompoundWeight> {
-    fn from(zone: GenericIndex<ZoneWeight>) -> Self {
-        GenericIndex::<CompoundWeight>::new(zone.petgraph_index())
+impl From<GenericIndex<PolyWeight>> for GenericIndex<CompoundWeight> {
+    fn from(poly: GenericIndex<PolyWeight>) -> Self {
+        GenericIndex::<CompoundWeight>::new(poly.petgraph_index())
     }
 }
 
 #[derive(Debug, Clone, Copy, PartialEq)]
-pub struct SolidZoneWeight {
+pub struct SolidPolyWeight {
     pub layer: usize,
     pub maybe_net: Option<usize>,
 }
 
-impl GetLayer for SolidZoneWeight {
+impl GetLayer for SolidPolyWeight {
     fn layer(&self) -> usize {
         self.layer
     }
 }
 
-impl GetMaybeNet for SolidZoneWeight {
+impl GetMaybeNet for SolidPolyWeight {
     fn maybe_net(&self) -> Option<usize> {
         self.maybe_net
     }
 }
 
-impl From<GenericIndex<SolidZoneWeight>> for GenericIndex<CompoundWeight> {
-    fn from(zone: GenericIndex<SolidZoneWeight>) -> Self {
-        GenericIndex::<CompoundWeight>::new(zone.petgraph_index())
+impl From<GenericIndex<SolidPolyWeight>> for GenericIndex<CompoundWeight> {
+    fn from(poly: GenericIndex<SolidPolyWeight>) -> Self {
+        GenericIndex::<CompoundWeight>::new(poly.petgraph_index())
     }
 }
 
 #[derive(Debug, Clone, Copy, PartialEq)]
-pub struct PourZoneWeight {
+pub struct PourPolyWeight {
     pub layer: usize,
     pub maybe_net: Option<usize>,
 }
 
-impl<'a> GetLayer for PourZoneWeight {
+impl<'a> GetLayer for PourPolyWeight {
     fn layer(&self) -> usize {
         self.layer
     }
 }
 
-impl<'a> GetMaybeNet for PourZoneWeight {
+impl<'a> GetMaybeNet for PourPolyWeight {
     fn maybe_net(&self) -> Option<usize> {
         self.maybe_net
     }
 }
 
-impl From<GenericIndex<PourZoneWeight>> for GenericIndex<CompoundWeight> {
-    fn from(zone: GenericIndex<PourZoneWeight>) -> Self {
-        GenericIndex::<CompoundWeight>::new(zone.petgraph_index())
+impl From<GenericIndex<PourPolyWeight>> for GenericIndex<CompoundWeight> {
+    fn from(poly: GenericIndex<PourPolyWeight>) -> Self {
+        GenericIndex::<CompoundWeight>::new(poly.petgraph_index())
     }
 }
diff --git a/src/specctra/design.rs b/src/specctra/design.rs
index 0e9c448..887d9d6 100644
--- a/src/specctra/design.rs
+++ b/src/specctra/design.rs
@@ -6,7 +6,7 @@ use thiserror::Error;
 use crate::{
     board::{mesadata::AccessMesadata, Board},
     drawing::{dot::FixedDotWeight, seg::FixedSegWeight, Drawing},
-    layout::{zone::SolidZoneWeight, Layout},
+    layout::{poly::SolidPolyWeight, Layout},
     math::Circle,
     specctra::{
         mesadata::SpecctraMesadata,
@@ -389,8 +389,8 @@ impl SpecctraDesign {
         net: usize,
         maybe_pin: Option<String>,
     ) {
-        let zone = board.add_zone(
-            SolidZoneWeight {
+        let poly = board.add_poly(
+            SolidPolyWeight {
                 layer,
                 maybe_net: Some(net),
             }
@@ -399,7 +399,7 @@ impl SpecctraDesign {
         );
 
         // Corners.
-        let dot_1_1 = board.add_zone_fixed_dot_infringably(
+        let dot_1_1 = board.add_poly_fixed_dot_infringably(
             FixedDotWeight {
                 circle: Circle {
                     pos: Self::pos(place_pos, place_rot, pin_pos, pin_rot, x1, y1),
@@ -408,9 +408,9 @@ impl SpecctraDesign {
                 layer,
                 maybe_net: Some(net),
             },
-            zone,
+            poly,
         );
-        let dot_2_1 = board.add_zone_fixed_dot_infringably(
+        let dot_2_1 = board.add_poly_fixed_dot_infringably(
             FixedDotWeight {
                 circle: Circle {
                     pos: Self::pos(place_pos, place_rot, pin_pos, pin_rot, x2, y1),
@@ -419,9 +419,9 @@ impl SpecctraDesign {
                 layer,
                 maybe_net: Some(net),
             },
-            zone,
+            poly,
         );
-        let dot_2_2 = board.add_zone_fixed_dot_infringably(
+        let dot_2_2 = board.add_poly_fixed_dot_infringably(
             FixedDotWeight {
                 circle: Circle {
                     pos: Self::pos(place_pos, place_rot, pin_pos, pin_rot, x2, y2),
@@ -430,9 +430,9 @@ impl SpecctraDesign {
                 layer,
                 maybe_net: Some(net),
             },
-            zone,
+            poly,
         );
-        let dot_1_2 = board.add_zone_fixed_dot_infringably(
+        let dot_1_2 = board.add_poly_fixed_dot_infringably(
             FixedDotWeight {
                 circle: Circle {
                     pos: Self::pos(place_pos, place_rot, pin_pos, pin_rot, x1, y2),
@@ -441,10 +441,10 @@ impl SpecctraDesign {
                 layer,
                 maybe_net: Some(net),
             },
-            zone,
+            poly,
         );
         // Sides.
-        board.add_zone_fixed_seg_infringably(
+        board.add_poly_fixed_seg_infringably(
             dot_1_1,
             dot_2_1,
             FixedSegWeight {
@@ -452,9 +452,9 @@ impl SpecctraDesign {
                 layer,
                 maybe_net: Some(net),
             },
-            zone,
+            poly,
         );
-        board.add_zone_fixed_seg_infringably(
+        board.add_poly_fixed_seg_infringably(
             dot_2_1,
             dot_2_2,
             FixedSegWeight {
@@ -462,9 +462,9 @@ impl SpecctraDesign {
                 layer,
                 maybe_net: Some(net),
             },
-            zone,
+            poly,
         );
-        board.add_zone_fixed_seg_infringably(
+        board.add_poly_fixed_seg_infringably(
             dot_2_2,
             dot_1_2,
             FixedSegWeight {
@@ -472,9 +472,9 @@ impl SpecctraDesign {
                 layer,
                 maybe_net: Some(net),
             },
-            zone,
+            poly,
         );
-        board.add_zone_fixed_seg_infringably(
+        board.add_poly_fixed_seg_infringably(
             dot_1_2,
             dot_1_1,
             FixedSegWeight {
@@ -482,7 +482,7 @@ impl SpecctraDesign {
                 layer,
                 maybe_net: Some(net),
             },
-            zone,
+            poly,
         );
     }
 
@@ -568,8 +568,8 @@ impl SpecctraDesign {
         net: usize,
         maybe_pin: Option<String>,
     ) {
-        let zone = board.add_zone(
-            SolidZoneWeight {
+        let poly = board.add_poly(
+            SolidPolyWeight {
                 layer,
                 maybe_net: Some(net),
             }
@@ -578,7 +578,7 @@ impl SpecctraDesign {
         );
 
         // add the first coordinate in the wire path as a dot and save its index
-        let mut prev_index = board.add_zone_fixed_dot_infringably(
+        let mut prev_index = board.add_poly_fixed_dot_infringably(
             FixedDotWeight {
                 circle: Circle {
                     pos: Self::pos(
@@ -595,13 +595,13 @@ impl SpecctraDesign {
                 maybe_net: Some(net),
             },
             // TODO: This manual retagging shouldn't be necessary, `.into()` should suffice.
-            //GenericIndex::new(zone.petgraph_index()).into(),
-            zone,
+            //GenericIndex::new(poly.petgraph_index()).into(),
+            poly,
         );
 
         // iterate through path coords starting from the second
         for coord in coords.iter().skip(1) {
-            let index = board.add_zone_fixed_dot_infringably(
+            let index = board.add_poly_fixed_dot_infringably(
                 FixedDotWeight {
                     circle: Circle {
                         pos: Self::pos(place_pos, place_rot, pin_pos, pin_rot, coord.x, coord.y)
@@ -612,11 +612,11 @@ impl SpecctraDesign {
                     maybe_net: Some(net),
                 },
                 // TODO: This manual retagging shouldn't be necessary, `.into()` should suffice.
-                zone,
+                poly,
             );
 
             // add a seg between the current and previous coords
-            let _ = board.add_zone_fixed_seg_infringably(
+            let _ = board.add_poly_fixed_seg_infringably(
                 prev_index,
                 index,
                 FixedSegWeight {
@@ -625,7 +625,7 @@ impl SpecctraDesign {
                     maybe_net: Some(net),
                 },
                 // TODO: This manual retagging shouldn't be necessary, `.into()` should suffice.
-                zone,
+                poly,
             );
 
             prev_index = index;