Federation
Part of speech: adjective
Definition: Of an architectural style popular around the time of federation.
Part of speech: noun
Definition: An array of nations or states that are unified under one central authority which is elected by its members. The act of joining several states into the federation. (Australia)
Example sentence: I will not play a farewell game with the national team. I would like to thank the federation for expressing an interest. But I prefer to leave football with an official match because I am not a fan of farewell games.
Confederation
Part of speech: noun
Definition: A union or alliance of states or political organizations.The act of forming an alliance.
Example sentence: This world of ours... must avoid becoming a community of dreadful fear and hate, and be, instead, a proud confederation of mutual trust and respect.