bubble and squeak vs United Kingdom of Great Britain and Northern Ireland

bubble and squeak and United Kingdom of Great Britain and Northern Ireland both are nouns.

Word	Noun	Adjective	Verb	Adverb
bubble and squeak	Yes	No	No	No
United Kingdom of Great Britain and Northern Ireland	Yes	No	No	No

bubble and squeak (noun)	United Kingdom of Great Britain and Northern Ireland (noun)
leftover cabbage fried with cooked potatoes and sometimes meat	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