vacuum cleaner vs vacuum

vacuum cleaner and vacuum both are nouns.

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

As nouns, vacuum cleaner and vacuum are synonyms defined as:

vacuum cleaner and vacuum: an electrical home appliance that cleans by suction

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

vacuum cleaner (verb)	vacuum (verb)
	clean with a vacuum cleaner