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# Glossary

- **Msg** = published data that is signed and shareable
- **Msg hash** = hash(msg.metadata)
- **Tangle** = any single-root DAG of msgs that can be replicated by peers
- **Tangle Root** = the origin msg of a tangle
- **Tangle Tips** = tangle msgs that are not yet referenced by any other msg in the tangle
- **Tangle ID** = Msg hash of the tangle's root msg
- **Identity tangle** = tangle with msgs that add (or remove?) asymmetric-crypto public keys
- **ID** = tangle ID of the identity tangle, refers to the "identity" of a person or a group
- **Feed** = tangle with msgs authored by (any pubkey in) an identity
- **Feed root** = a msg that is deterministically predictable and empty, so to allow others to pre-know its hash
- **Feed ID** = ID of a feed (Msg ID of the feed's root msg)