basting stitch vs sewing stitch

basting stitch and sewing stitch both are nouns.

Word	Noun	Adjective	Verb	Adverb
basting stitch	Yes	No	No	No
sewing stitch	Yes	No	No	No

As nouns, sewing stitch is a hypernym of basting stitch; that is, sewing stitch is a word with a broader meaning than basting stitch:

basting stitch: a loose temporary sewing stitch to hold layers of fabric together
sewing stitch: a stitch made with thread and a threaded sewing needle through fabric or leather

Other hypernyms of basting stitch include embroidery stitch.

basting stitch (noun)	sewing stitch (noun)
a loose temporary sewing stitch to hold layers of fabric together	a stitch made with thread and a threaded sewing needle through fabric or leather