mend vs sewing

mend and sewing both are nouns.

Word	Noun	Adjective	Verb	Adverb
mend	Yes	No	Yes	No
sewing	Yes	No	No	No

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

Other hypernyms of mend include stitchery.

mend (noun)	sewing (noun)
the act of putting something in working order again	joining or attaching by stitches
sewing that repairs a worn or torn hole (especially in a garment)	needlework on which you are working with needle and thread

mend (verb)	sewing (verb)
restore by replacing a part or putting together what is torn or broken
heal or recover