olemus
kontekstist sõltuv organisatsiooniline vorm

Wiktionary:
2. array of nations or states that are unified under one central authority which is elected by its members
3. any society or organisation formed from separate groups or bodies

näiteid
https://en.wikipedia.org/wiki/Federation_(disambiguation)
https://en.wikipedia.org/wiki/Federated

vt ka
- liidend
- liit (2)