crease vs kink

crease and kink both are nouns.

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

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

crease: an angular or rounded shape made by folding
kink: a sharp bend in a line produced when a line having a loop is pulled tight

Other hyponyms of crease include plait, pleat, twirl, twist, pucker, ruck, accordion fold, concertina fold, z-fold, zig-zag fold.

crease (noun)	kink (noun)
a Malayan dagger with a wavy blade	a difficulty or flaw in a plan or operation
a slight depression or fold in the smoothness of a surface	an eccentric idea
an angular or rounded shape made by folding	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)

crease (verb)	kink (verb)
become wrinkled or crumpled or creased	form a curl, curve, or kink
make wrinkles or creases on a smooth surface; make a pressed, folded or wrinkled line in; `crisp' is archaic	curl tightly
make wrinkled or creased
scrape gently