Great Britain vs supplementary benefit

Great Britain and supplementary benefit both are nouns.

Word	Noun	Adjective	Verb	Adverb
Great Britain	Yes	No	No	No
supplementary benefit	Yes	No	No	No

Great Britain (noun)	supplementary benefit (noun)
an island comprising England and Scotland and Wales	benefits paid to bring incomes up to minimum levels established by law
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