jeopardize vs venture

jeopardize is not a noun while venture is a noun.

Word	Noun	Adjective	Verb	Adverb
jeopardize	No	No	Yes	No
venture	Yes	No	Yes	No

As verbs, jeopardize and venture are synonyms defined as:

Other synonyms of jeopardize include adventure, hazard, stake.

jeopardize (noun)	venture (noun)
	any venturesome undertaking especially one with an uncertain outcome
	a commercial undertaking that risks a loss but promises a profit
	an investment that is very risky but could yield great profits

jeopardize (verb)	venture (verb)
put at risk	put forward, of a guess, in spite of possible refutation
pose a threat to; present a danger to	put at risk
	proceed somewhere despite the risk of possible dangers