armoured car vs war machine

armoured car and war machine both are nouns.

Word	Noun	Adjective	Verb	Adverb
armoured car	Yes	No	No	No
war machine	Yes	No	No	No

armoured car (noun)	war machine (noun)
a military combat vehicle on wheels with light armor (and usually a machine gun)	the military forces of a nation
an armor-plated truck with strong doors and locks used to transport money or valuables