United Kingdom of Great Britain and Northern Ireland vs class list

United Kingdom of Great Britain and Northern Ireland and class list both are nouns.

Word	Noun	Adjective	Verb	Adverb
United Kingdom of Great Britain and Northern Ireland	Yes	No	No	No
class list	Yes	No	No	No

United Kingdom of Great Britain and Northern Ireland (noun)	class list (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	a list issued by examiners that categorizes students according to the class of honours they achieved in their degree examinations