venture vs promise

venture and promise both are nouns.

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

As verbs, promise is a hyponym of venture; that is, promise is a word with a more specific, narrower meaning than venture:

Other hyponyms of venture include anticipate, call, forebode, foretell, predict, prognosticate, surmise, suspect.

venture (noun)	promise (noun)
any venturesome undertaking especially one with an uncertain outcome	grounds for feeling hopeful about the future
a commercial undertaking that risks a loss but promises a profit	a verbal commitment by one person to another agreeing to do (or not to do) something in the future
an investment that is very risky but could yield great profits

venture (verb)	promise (verb)
put forward, of a guess, in spite of possible refutation	make a promise or commitment
put at risk	promise to undertake or give
proceed somewhere despite the risk of possible dangers	make a prediction about; tell in advance
	give grounds for expectations