ruck up vs ruckle

ruck up and ruckle both are verbs.

Word	Noun	Adjective	Verb	Adverb
ruck up	No	No	Yes	No
ruckle	No	No	Yes	No

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

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

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

ruck up (verb)	ruckle (verb)
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 a hoarse, rattling sound