armored combat vehicle vs war machine

armored combat vehicle and war machine both are nouns.

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

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