stitch vs pucker

stitch and pucker both are nouns.

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

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

stitch (noun)	pucker (noun)
a link or loop or knot made by an implement in knitting, crocheting, embroidery, or sewing	an irregular fold in an otherwise even surface (as in cloth)
a sharp spasm of pain in the side resulting from running

stitch (verb)	pucker (verb)
fasten by sewing; do needlework	to gather something into small wrinkles or folds
	draw together into folds or puckers
	become wrinkled or drawn together