United Kingdom of Great Britain and Northern Ireland vs kerb crawler

United Kingdom of Great Britain and Northern Ireland and kerb crawler both are nouns.

Word	Noun	Adjective	Verb	Adverb
United Kingdom of Great Britain and Northern Ireland	Yes	No	No	No
kerb crawler	Yes	No	No	No

United Kingdom of Great Britain and Northern Ireland (noun)	kerb crawler (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	someone who drives slowly along the curb seeking sex from prostitutes or other women