war machine vs theatre

war machine and theatre both are nouns.

Word	Noun	Adjective	Verb	Adverb
war machine	Yes	No	No	No
theatre	Yes	No	No	No

war machine (noun)	theatre (noun)
the military forces of a nation	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