incise vs slit

incise is not a noun while slit is a noun.

Word	Noun	Adjective	Verb	Adverb
incise	No	No	Yes	No
slit	Yes	No	Yes	No

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

Other hyponyms of incise include notch, scrape, scratch, scratch up, groove, worry, deaden, girdle.

incise (noun)	slit (noun)
	a long narrow opening
	obscene terms for female genitals
	a narrow fissure
	a depression scratched or carved into a surface

incise (verb)	slit (verb)
make an incision into by carving or cutting	cut a slit into
	make a clean cut through