handheld vacuum vs handheld vacuum cleaner

handheld vacuum and handheld vacuum cleaner both are nouns.

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

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

handheld vacuum and handheld vacuum cleaner: a lightweight vacuum cleaner either powered from rechargeable batteries or mains power, popular for cleaning up smaller spills.

Other synonyms of handheld vacuum include hand-held vacuum, hand-held vacuum cleaner.

handheld vacuum (noun)	handheld vacuum cleaner (noun)
a lightweight vacuum cleaner either powered from rechargeable batteries or mains power, popular for cleaning up smaller spills.	a lightweight vacuum cleaner either powered from rechargeable batteries or mains power, popular for cleaning up smaller spills.