wardroom vs military quarters

wardroom and military quarters both are nouns.

Word	Noun	Adjective	Verb	Adverb
wardroom	Yes	No	No	No
military quarters	Yes	No	No	No

As nouns, military quarters is a hypernym of wardroom; that is, military quarters is a word with a broader meaning than wardroom:

wardroom: military quarters for dining and recreation for officers of a warship (except the captain)
military quarters: living quarters for personnel on a military post

wardroom (noun)	military quarters (noun)
military quarters for dining and recreation for officers of a warship (except the captain)	living quarters for personnel on a military post