hothead vs venturer

hothead and venturer both are nouns.

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

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

Other hypernyms of hothead include adventurer.

hothead (noun)	venturer (noun)
a reckless impetuous irresponsible person	a person who enjoys taking risks
a belligerent grouch	a merchant who undertakes a trading venture (especially a venture that sends goods overseas)