alienate vs alienator

alienate is not a noun while alienator is a noun.

Word	Noun	Adjective	Verb	Adverb
alienate	No	No	Yes	No
alienator	Yes	No	No	No

alienate (noun)	alienator (noun)
	an unpleasant person who causes friendly people to become indifferent or unfriendly or hostile

alienate (verb)	alienator (verb)
arouse hostility or indifference in where there had formerly been love, affection, or friendliness
make withdrawn or isolated or emotionally dissociated
transfer property or ownership