United Kingdom of Great Britain and Northern Ireland vs skiffle group

United Kingdom of Great Britain and Northern Ireland and skiffle group both are nouns.

Word	Noun	Adjective	Verb	Adverb
United Kingdom of Great Britain and Northern Ireland	Yes	No	No	No
skiffle group	Yes	No	No	No

United Kingdom of Great Britain and Northern Ireland (noun)	skiffle group (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 band of musicians who play skiffle