baste vs sew

baste is a noun but sew is not a noun.

Word	Noun	Adjective	Verb	Adverb
baste	Yes	No	Yes	No
sew	No	No	Yes	No

As verbs, sew is a hypernym of baste; that is, sew is a word with a broader meaning than baste:

Other hypernyms of baste include run up, sew together, stitch.

baste (noun)	sew (noun)
a loose temporary sewing stitch to hold layers of fabric together

baste (verb)	sew (verb)
cover with liquid before cooking	fasten by sewing; do needlework
sew together loosely, with large stitches	create (clothes) with cloth
strike violently and repeatedly