war machine vs drill

war machine and drill both are nouns.

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

war machine (noun)	drill (noun)
the military forces of a nation	systematic training by multiple repetitions
	(military) the training of soldiers to march (as in ceremonial parades) or to perform the manual of arms
	similar to the mandrill but smaller and less brightly colored
	a tool with a sharp point and cutting edges for making holes in hard materials (usually rotating rapidly or by repeated blows)

war machine (verb)	drill (verb)
	learn by repetition
	teach by repetition
	train in the military, e.g., in the use of weapons
	undergo military training or do military exercises
	make a hole, especially with a pointed power or hand tool