fagot stitch vs sewing stitch

fagot stitch and sewing stitch both are nouns.

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

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

fagot stitch: the stitch that ties a group of parallel threads together in fagoting
sewing stitch: a stitch made with thread and a threaded sewing needle through fabric or leather

Other hypernyms of fagot stitch include embroidery stitch.

fagot stitch (noun)	sewing stitch (noun)
the stitch that ties a group of parallel threads together in fagoting	a stitch made with thread and a threaded sewing needle through fabric or leather