stitch vs hemstitch

stitch and hemstitch both are nouns.

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

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

stitch (noun)	hemstitch (noun)
a link or loop or knot made by an implement in knitting, crocheting, embroidery, or sewing	embroidery similar to drawnwork
a sharp spasm of pain in the side resulting from running	a stitch in which parallel threads are drawn and exposed threads are caught together in groups

stitch (verb)	hemstitch (verb)
fasten by sewing; do needlework	sew with hemstitches