visual display unit vs display

visual display unit and display both are nouns.

Word	Noun	Adjective	Verb	Adverb
visual display unit	Yes	No	No	No
display	Yes	No	Yes	No

As nouns, display is a hypernym of visual display unit; that is, display is a word with a broader meaning than visual display unit:

Other hypernyms of visual display unit include video display.

visual display unit (noun)	display (noun)
(British) British term for video display	something shown to the public
	a visual representation of something
	an electronic device that represents information in visual form
	exhibiting openly in public view
	something intended to communicate a particular impression
	behavior that makes your feelings public

visual display unit (verb)	display (verb)
	to show, make visible or apparent
	attract attention by displaying some body part or posing; of animals