confederation vs coalition

confederation and coalition both are nouns.

Word	Noun	Adjective	Verb	Adverb
confederation	Yes	No	No	No
coalition	Yes	No	No	No

As nouns, coalition is a hypernym of confederation; that is, coalition is a word with a broader meaning than confederation:

Other hypernyms of confederation include fusion.

confederation (noun)	coalition (noun)
the act of forming an alliance or confederation	the union of diverse things into one body or form or group; the growing together of parts
a union of political organizations	an organization of people (or countries) involved in a pact or treaty
the state of being allied or confederated	the state of being combined into one body