void vs nullify

void is a noun but nullify is not a noun.

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

As verbs, void and nullify are synonyms defined as:

Other synonyms of void include annul, avoid, invalidate, quash.

void (noun)	nullify (noun)
an empty area or space
the state of nonexistence

void (adjective)	nullify (adjective)
containing nothing
lacking any legal or binding force

void (verb)	nullify (verb)
excrete or discharge from the body	make ineffective by counterbalancing the effect of
take away the legal force of or render ineffective	show to be invalid
clear (a room, house, place) of occupants or empty or clear (a place or receptacle) of something	declare invalid
declare invalid