mess hall vs military

mess hall and military both are nouns.

Word	Noun	Adjective	Verb	Adverb
mess hall	Yes	No	No	No
military	Yes	Yes	No	No

mess hall (noun)	military (noun)
a (large) military dining room where service personnel eat or relax	the military forces of a nation

mess hall (adjective)	military (adjective)
	associated with or performed by members of the armed services as contrasted with civilians
	characteristic of or associated with soldiers or the military
	of or relating to the study of the principles of warfare