sponge bag vs Britain

sponge bag and Britain both are nouns.

Word	Noun	Adjective	Verb	Adverb
sponge bag	Yes	No	No	No
Britain	Yes	No	No	No

sponge bag (noun)	Britain (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