renounce vs renunciation

renounce is not a noun while renunciation is a noun.

Word	Noun	Adjective	Verb	Adverb
renounce	No	No	Yes	No
renunciation	Yes	No	No	No

renounce (noun)	renunciation (noun)
	the act of renouncing; sacrificing or giving up or surrendering (a possession or right or title or privilege etc.)
	an act (spoken or written) declaring that something is surrendered or disowned
	rejecting or disowning or disclaiming as invalid
	the state of having rejected your religious beliefs for your political party or a cause (often in favor of opposing beliefs or causes)

renounce (verb)	renunciation (verb)
cast off
turn away from; give up
leave (a job, post, or position) voluntarily
give up, such as power, as of monarchs and emperors, or duties and obligations