Great Britain vs poor rates

Great Britain and poor rates both are nouns.

Word	Noun	Adjective	Verb	Adverb
Great Britain	Yes	No	No	No
poor rates	Yes	No	No	No

Great Britain (noun)	poor rates (noun)
an island comprising England and Scotland and Wales	a local tax for the relief of the poor
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