pease pudding vs Great Britain

pease pudding and Great Britain both are nouns.

Word	Noun	Adjective	Verb	Adverb
pease pudding	Yes	No	No	No
Great Britain	Yes	No	No	No

pease pudding (noun)	Great Britain (noun)
a pudding made with strained split peas mixed with egg	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