cockle vs pucker

cockle and pucker both are nouns.

Word	Noun	Adjective	Verb	Adverb
cockle	Yes	No	Yes	No
pucker	Yes	No	Yes	No

As verbs, cockle and pucker are synonyms defined as:

Other synonyms of cockle include crumple, knit, rumple.

cockle (noun)	pucker (noun)
common edible, burrowing European bivalve mollusk that has a strong, rounded shell with radiating ribs	an irregular fold in an otherwise even surface (as in cloth)
common edible European bivalve

cockle (verb)	pucker (verb)
to gather something into small wrinkles or folds	to gather something into small wrinkles or folds
stir up (water) so as to form ripples	draw together into folds or puckers
	become wrinkled or drawn together