crabby person vs crank

crabby person and crank both are nouns.

Word	Noun	Adjective	Verb	Adverb
crabby person	Yes	No	No	No
crank	Yes	Yes	Yes	No

As nouns, crank is a hypernym of crabby person; that is, crank is a word with a broader meaning than crabby person:

Other hypernyms of crabby person include churl, crosspatch, grouch, grump.

crabby person (noun)	crank (noun)
a quarrelsome grouch	a hand tool consisting of a rotating shaft with parallel handle
	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 bad-tempered person
	a whimsically eccentric person

crabby person (adjective)	crank (adjective)
	(used of boats) inclined to heel over easily under sail