class list vs UK

class list and UK both are nouns.

Word	Noun	Adjective	Verb	Adverb
class list	Yes	No	No	No
UK	Yes	No	No	No

class list (noun)	UK (noun)
a list issued by examiners that categorizes students according to the class of honours they achieved in their degree examinations	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