sponge bag vs United Kingdom of Great Britain and Northern Ireland

sponge bag and United Kingdom of Great Britain and Northern Ireland both are nouns.

Word	Noun	Adjective	Verb	Adverb
sponge bag	Yes	No	No	No
United Kingdom of Great Britain and Northern Ireland	Yes	No	No	No

sponge bag (noun)	United Kingdom of Great Britain and Northern Ireland (noun)
a waterproof bag for holding bathrooms items (soap and toothpaste etc.) when you are travelling	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