crank vs fire-eater

crank and fire-eater both are nouns.

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

As nouns, fire-eater is a hyponym of crank; that is, fire-eater is a word with a more specific, narrower meaning than crank:

Other hyponyms of crank include crab, crabby person, hothead, misanthrope, misanthropist.

crank (noun)	fire-eater (noun)
a hand tool consisting of a rotating shaft with parallel handle	a performer who pretends to swallow fire
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 belligerent grouch
a bad-tempered person	a member of a fire department who tries to extinguish fires
a whimsically eccentric person

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