adventurer vs venturer

adventurer and venturer both are nouns.

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

As nouns, adventurer and venturer are synonyms defined as:

adventurer (noun)	venturer (noun)
a person who enjoys taking risks	a person who enjoys taking risks
someone who travels into little known regions (especially for some scientific purpose)	a merchant who undertakes a trading venture (especially a venture that sends goods overseas)