military machine vs contingent

military machine and contingent both are nouns.

Word	Noun	Adjective	Verb	Adverb
military machine	Yes	No	No	No
contingent	Yes	Yes	No	No

military machine (noun)	contingent (noun)
the military forces of a nation	a temporary military unit
	a gathering of persons representative of some larger group

military machine (adjective)	contingent (adjective)
	being determined by conditions or circumstances that follow
	possible but not certain to occur
	uncertain because of uncontrollable circumstances