tea biscuit vs Great Britain

tea biscuit and Great Britain both are nouns.

Word	Noun	Adjective	Verb	Adverb
tea biscuit	Yes	No	No	No
Great Britain	Yes	No	No	No

tea biscuit (noun)	Great Britain (noun)
flat semisweet cookie or biscuit usually served with tea	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