curl vs kink

curl and kink both are nouns.

Word	Noun	Adjective	Verb	Adverb
curl	Yes	No	Yes	No
kink	Yes	No	Yes	No

As verbs, curl and kink are synonyms defined as:

Other synonyms of curl include curve.

As verbs, kink is a hyponym of curl; that is, kink is a word with a more specific, narrower meaning than curl:

Other hyponyms of curl include crape, crimp, frizz, frizzle, kink up.

curl (noun)	kink (noun)
lock of hair in the shape of a spiral or curl	a difficulty or flaw in a plan or operation
a round shape formed by a series of concentric circles (as formed by leaves or flower petals)	an eccentric idea
	a person with unusual sexual tastes
	a sharp bend in a line produced when a line having a loop is pulled tight
	a painful muscle spasm especially in the neck or back (`rick' and `wrick' are British)

curl (verb)	kink (verb)
form a curl, curve, or kink	form a curl, curve, or kink
play the Scottish game of curling	curl tightly
twist or roll into coils or ringlets
wind around something in coils or loops
shape one's body into a curl