vacancy vs void

vacancy and void both are nouns.

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

As nouns, vacancy and void are synonyms defined as:

Other synonyms of vacancy include emptiness, vacuum.

vacancy (noun)	void (noun)
an empty area or space	an empty area or space
being unoccupied	the state of nonexistence

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

vacancy (verb)	void (verb)
	excrete or discharge from the body
	take away the legal force of or render ineffective
	clear (a room, house, place) of occupants or empty or clear (a place or receptacle) of something
	declare invalid