madcap vs venturer

madcap and venturer both are nouns.

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

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

Other hypernyms of madcap include adventurer.

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

madcap (adjective)	venturer (adjective)
characterized by undue haste and lack of thought or deliberation