United Kingdom of Great Britain and Northern Ireland vs rag week

United Kingdom of Great Britain and Northern Ireland and rag week both are nouns.

Word	Noun	Adjective	Verb	Adverb
United Kingdom of Great Britain and Northern Ireland	Yes	No	No	No
rag week	Yes	No	No	No

United Kingdom of Great Britain and Northern Ireland (noun)	rag week (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 week at British universities during which side-shows and processions of floats are organized to raise money for charities