giro account vs Great Britain

giro account and Great Britain both are nouns.

Word	Noun	Adjective	Verb	Adverb
giro account	Yes	No	No	No
Great Britain	Yes	No	No	No

giro account (noun)	Great Britain (noun)
an account at a post office that can be used in similar ways to an account at a bank	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