United Kingdom of Great Britain and Northern Ireland vs Highway Code

United Kingdom of Great Britain and Northern Ireland and Highway Code both are nouns.

Word	Noun	Adjective	Verb	Adverb
United Kingdom of Great Britain and Northern Ireland	Yes	No	No	No
Highway Code	Yes	No	No	No

United Kingdom of Great Britain and Northern Ireland (noun)	Highway Code (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	the code of rules governing the use of public roads