rumple vs ruckle

rumple and ruckle both are verbs.

Word	Noun	Adjective	Verb	Adverb
rumple	No	No	Yes	No
ruckle	No	No	Yes	No

As verbs, ruckle is a hypernym of rumple; that is, ruckle is a word with a broader meaning than rumple:

rumple: to gather something into small wrinkles or folds
ruckle: make wrinkles or creases on a smooth surface; make a pressed, folded or wrinkled line in; `crisp' is archaic

Other hypernyms of rumple include crease, crinkle, crisp, scrunch, scrunch up, wrinkle.

rumple (verb)	ruckle (verb)
become wrinkled or crumpled or creased	make wrinkles or creases on a smooth surface; make a pressed, folded or wrinkled line in; `crisp' is archaic
disturb the smoothness of	make a hoarse, rattling sound
to gather something into small wrinkles or folds