Great Britain vs sure start maternity grant

Great Britain and sure start maternity grant both are nouns.

Word	Noun	Adjective	Verb	Adverb
Great Britain	Yes	No	No	No
sure start maternity grant	Yes	No	No	No

Great Britain (noun)	sure start maternity grant (noun)
an island comprising England and Scotland and Wales	a one-time benefit payable for each child expected, born, or adpoted.
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