adventuress vs adventurer

adventuress and adventurer both are nouns.

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

As nouns, adventurer is a hypernym of adventuress; that is, adventurer is a word with a broader meaning than adventuress:

Other hypernyms of adventuress include venturer, adult female, woman.

adventuress (noun)	adventurer (noun)
a woman adventurer	a person who enjoys taking risks
	someone who travels into little known regions (especially for some scientific purpose)