crease vs ruck

crease and ruck both are nouns.

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

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

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

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

crease: make wrinkles or creases on a smooth surface; make a pressed, folded or wrinkled line in; `crisp' is archaic
ruck: become wrinkled or drawn together

Other hyponyms of crease include cockle, crumple, knit, pucker, rumple, pucker, ruck up.

crease (noun)	ruck (noun)
a Malayan dagger with a wavy blade	a crowd especially of ordinary or undistinguished persons or things
a slight depression or fold in the smoothness of a surface	an irregular fold in an otherwise even surface (as in cloth)
an angular or rounded shape made by folding

crease (verb)	ruck (verb)
become wrinkled or crumpled or creased	become wrinkled or drawn together
make wrinkles or creases on a smooth surface; make a pressed, folded or wrinkled line in; `crisp' is archaic
make wrinkled or creased
scrape gently