operational vs war machine

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

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

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

operational (adjective)	war machine (adjective)
(military) of or intended for or involved in military operations
pertaining to a process or series of actions for achieving a result
being in effect or operation
fit or ready for use or service