United Kingdom of Great Britain and Northern Ireland vs front bench

United Kingdom of Great Britain and Northern Ireland and front bench both are nouns.

Word	Noun	Adjective	Verb	Adverb
United Kingdom of Great Britain and Northern Ireland	Yes	No	No	No
front bench	Yes	No	No	No

United Kingdom of Great Britain and Northern Ireland (noun)	front bench (noun)
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	any of the front seats in the House of Commons that are reserved for ministers or former ministers