fire-eater vs crank

fire-eater and crank both are nouns.

Word	Noun	Adjective	Verb	Adverb
fire-eater	Yes	No	No	No
crank	Yes	Yes	Yes	No

As nouns, crank is a hypernym of fire-eater; that is, crank is a word with a broader meaning than fire-eater:

Other hypernyms of fire-eater include churl, crosspatch, grouch, grump.

fire-eater (noun)	crank (noun)
a performer who pretends to swallow fire	a hand tool consisting of a rotating shaft with parallel handle
a belligerent grouch	an amphetamine derivative (trade name Methedrine) used in the form of a crystalline hydrochloride; used as a stimulant to the nervous system and as an appetite suppressant
a member of a fire department who tries to extinguish fires	a bad-tempered person
	a whimsically eccentric person

fire-eater (adjective)	crank (adjective)
	(used of boats) inclined to heel over easily under sail