bottle bank vs Great Britain

bottle bank and Great Britain both are nouns.

Word	Noun	Adjective	Verb	Adverb
bottle bank	Yes	No	No	No
Great Britain	Yes	No	No	No

bottle bank (noun)	Great Britain (noun)
a place where bottles can be deposited for recycling	an island comprising England and Scotland and Wales
	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