dependent upon vs contingent

dependent upon is not a noun while contingent is a noun.

Word	Noun	Adjective	Verb	Adverb
dependent upon	No	Yes	No	No
contingent	Yes	Yes	No	No

As adjectives, dependent upon and contingent are synonyms defined as:

dependent upon and contingent: being determined by conditions or circumstances that follow

Other synonyms of dependent upon include contingent on, contingent upon, dependant on, dependant upon, dependent on, depending on.

dependent upon (noun)	contingent (noun)
	a temporary military unit
	a gathering of persons representative of some larger group

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