abnegate vs abnegator

abnegate is not a noun while abnegator is a noun.

Word	Noun	Adjective	Verb	Adverb
abnegate	No	No	Yes	No
abnegator	Yes	No	No	No

abnegate (noun)	abnegator (noun)
	one who gives up or relinquishes or renounces something

abnegate (verb)	abnegator (verb)
deny or renounce
surrender (power or a position)
deny oneself (something); restrain, especially from indulging in some pleasure