Sorry for the slight necro but I've been wanting to clear a few things up. It's me asking questions

People have proposed Koinon for leagues like the attic league but as far as I know, contemporaries called it hoi Athenaioi kai hoi sýmmachoi, "the Athenians and their allies/confederates", right?
The way I understand it, Koinon was rather used for federal states, like the Boiotians or Achaians?