war machine vs armoured combat vehicle

war machine and armoured combat vehicle both are nouns.

Word	Noun	Adjective	Verb	Adverb
war machine	Yes	No	No	No
armoured combat vehicle	Yes	No	No	No

war machine (noun)	armoured combat vehicle (noun)
the military forces of a nation	an enclosed armored military vehicle; has a cannon and moves on caterpillar treads