crank vs unpleasant person

crank and unpleasant person both are nouns.

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

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

Other hypernyms of crank include disagreeable person.

crank (noun)	unpleasant person (noun)
a hand tool consisting of a rotating shaft with parallel handle	a person who is not pleasant or agreeable
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

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