incisive vs incision

incisive is not a noun while incision is a noun.

Word	Noun	Adjective	Verb	Adverb
incisive	No	Yes	No	No
incision	Yes	No	No	No

incisive (noun)	incision (noun)
	the cutting of or into body tissues or organs (especially by a surgeon as part of an operation)
	a depression scratched or carved into a surface

incisive (adjective)	incision (adjective)
having or demonstrating ability to recognize or draw fine distinctions
suitable for cutting or piercing