dependant upon vs contingent

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

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

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

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

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

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

dependant 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