nullifier vs nullify

nullifier is a noun but nullify is not a noun.

Word	Noun	Adjective	Verb	Adverb
nullifier	Yes	No	No	No
nullify	No	No	Yes	No

nullifier (noun)	nullify (noun)
an advocate of nullification; someone who believes that a state can resist federal laws
an official who can invalidate or nullify

nullifier (verb)	nullify (verb)
	make ineffective by counterbalancing the effect of
	show to be invalid
	declare invalid