venturer vs merchant

venturer and merchant both are nouns.

Word	Noun	Adjective	Verb	Adverb
venturer	Yes	No	No	No
merchant	Yes	No	No	No

As nouns, merchant is a hypernym of venturer; that is, merchant is a word with a broader meaning than venturer:

venturer: a merchant who undertakes a trading venture (especially a venture that sends goods overseas)
merchant: a businessperson engaged in retail trade

Other hypernyms of venturer include merchandiser.

venturer (noun)	merchant (noun)
a person who enjoys taking risks	a businessperson engaged in retail trade
a merchant who undertakes a trading venture (especially a venture that sends goods overseas)