scrunch vs ruckle

scrunch is a noun but ruckle is not a noun.

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

As verbs, scrunch and ruckle are synonyms defined as:

scrunch and ruckle: make wrinkles or creases on a smooth surface; make a pressed, folded or wrinkled line in; `crisp' is archaic

Other synonyms of scrunch include crease, crinkle, crisp, scrunch up, wrinkle.

scrunch (noun)	ruckle (noun)
a crunching noise

scrunch (verb)	ruckle (verb)
make wrinkles or creases on a smooth surface; make a pressed, folded or wrinkled line in; `crisp' is archaic	make wrinkles or creases on a smooth surface; make a pressed, folded or wrinkled line in; `crisp' is archaic
sit on one's heels	make a hoarse, rattling sound
make a noise typical of an engine lacking lubricants