void vs vacuum

void and vacuum both are nouns.

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

As nouns, void and vacuum are synonyms defined as:

Other synonyms of void include emptiness, vacancy.

void (noun)	vacuum (noun)
an empty area or space	an electrical home appliance that cleans by suction
the state of nonexistence	a region that is devoid of matter
	an empty area or space
	the absence of matter

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

void (verb)	vacuum (verb)
excrete or discharge from the body	clean with a vacuum cleaner
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