crank vs crank handle

crank and crank handle both are nouns.

Word	Noun	Adjective	Verb	Adverb
crank	Yes	Yes	Yes	No
crank handle	Yes	No	No	No

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

Other hyponyms of crank include starting handle.

crank (noun)	crank handle (noun)
a hand tool consisting of a rotating shaft with parallel handle	crank used to start an engine
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)	crank handle (adjective)
(used of boats) inclined to heel over easily under sail