circumcision vs circumcise

circumcision is a noun but circumcise is not a noun.

Word	Noun	Adjective	Verb	Adverb
circumcision	Yes	No	No	No
circumcise	No	No	Yes	No

circumcision (noun)	circumcise (noun)
the act of circumcising; surgical removal of the foreskin of males
the act of circumcising performed on males eight days after birth as a Jewish and Muslim religious rite

circumcision (verb)	circumcise (verb)
	cut the foreskin off male babies or teenage boys
	cut the skin over the clitoris