handheld vacuum vs hand-held vacuum cleaner

handheld vacuum and hand-held vacuum cleaner both are nouns.

Word	Noun	Adjective	Verb	Adverb
handheld vacuum	Yes	No	No	No
hand-held vacuum cleaner	Yes	No	No	No

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

handheld vacuum and hand-held 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, handheld vacuum cleaner.

handheld vacuum (noun)	hand-held 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.