war machine vs campaign

war machine and campaign both are nouns.

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

war machine (noun)	campaign (noun)
the military forces of a nation	several related operations aimed at achieving a particular goal (usually within geographical and temporal constraints)
	an overland journey by hunters (especially in Africa)
	a series of actions advancing a principle or tending toward a particular end
	a race between candidates for elective office

war machine (verb)	campaign (verb)
	go on a campaign; go off to war
	run, stand, or compete for an office or a position
	exert oneself continuously, vigorously, or obtrusively to gain an end or engage in a crusade for a certain cause or person; be an advocate for