Great Britain vs skiffle group

Great Britain and skiffle group both are nouns.

Word	Noun	Adjective	Verb	Adverb
Great Britain	Yes	No	No	No
skiffle group	Yes	No	No	No

Great Britain (noun)	skiffle group (noun)
an island comprising England and Scotland and Wales	a band of musicians who play skiffle
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