coalition vs allies

coalition and allies both are nouns.

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

As nouns, allies is a hyponym of coalition; that is, allies is a word with a more specific, narrower meaning than coalition:

coalition: an organization of people (or countries) involved in a pact or treaty
allies: an alliance of nations joining together to fight a common enemy

coalition (noun)	allies (noun)
the union of diverse things into one body or form or group; the growing together of parts	an alliance of nations joining together to fight a common enemy
an organization of people (or countries) involved in a pact or treaty
the state of being combined into one body