hothead vs churl

hothead and churl both are nouns.

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

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

Other hypernyms of hothead include crank, crosspatch, grouch, grump.

hothead (noun)	churl (noun)
a reckless impetuous irresponsible person	a crude uncouth ill-bred person lacking culture or refinement
a belligerent grouch	a bad-tempered person
	a selfish person who is unwilling to give or spend