crank vs eccentric person

crank and eccentric person both are nouns.

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

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

Other hypernyms of crank include eccentric, flake, geek, oddball.

crank (noun)	eccentric person (noun)
a hand tool consisting of a rotating shaft with parallel handle	a person with an unusual or odd personality
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)	eccentric person (adjective)
(used of boats) inclined to heel over easily under sail