alienator vs alienate

alienator is a noun but alienate is not a noun.

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

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

alienator (verb)	alienate (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	make withdrawn or isolated or emotionally dissociated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