argonaut vs adventurer

argonaut and adventurer both are nouns.

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

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

argonaut: someone engaged in a dangerous but potentially rewarding adventure
adventurer: a person who enjoys taking risks

Other hypernyms of argonaut include venturer.

argonaut (noun)	adventurer (noun)
someone engaged in a dangerous but potentially rewarding adventure	a person who enjoys taking risks
	someone who travels into little known regions (especially for some scientific purpose)