combat area vs theatre

combat area and theatre both are nouns.

Word	Noun	Adjective	Verb	Adverb
combat area	Yes	No	No	No
theatre	Yes	No	No	No

combat area (noun)	theatre (noun)
a military area where combat forces operate	a building where theatrical performances or motion-picture shows can be presented
	the art of writing and producing plays
	a region in which active military operations are in progress