Great Britain vs lemon curd

Great Britain and lemon curd both are nouns.

Word	Noun	Adjective	Verb	Adverb
Great Britain	Yes	No	No	No
lemon curd	Yes	No	No	No

Great Britain (noun)	lemon curd (noun)
an island comprising England and Scotland and Wales	a conserve with a thick consistency; made with lemons and butter and eggs and sugar
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