Britain vs visual display unit

Britain and visual display unit both are nouns.

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

Britain (noun)	visual display unit (noun)
a monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland; `Great Britain' is often used loosely to refer to the United Kingdom	(British) British term for video display