armed vs war machine

armed is not a noun while war machine is a noun.

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

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

armed (adjective)	war machine (adjective)
(used of persons or the military) characterized by having or bearing arms
(used of plants and animals) furnished with bristles and thorns
having arms or arms as specified; used especially in combination