display vs VDU

display and VDU both are nouns.

Word	Noun	Adjective	Verb	Adverb
display	Yes	No	Yes	No
VDU	Yes	No	No	No

As nouns, VDU is a hyponym of display; that is, VDU is a word with a more specific, narrower meaning than display:

display (noun)	VDU (noun)
something shown to the public	(British) British term for video display
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

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