United Kingdom of Great Britain and Northern Ireland vs direct-grant school

United Kingdom of Great Britain and Northern Ireland and direct-grant school both are nouns.

Word	Noun	Adjective	Verb	Adverb
United Kingdom of Great Britain and Northern Ireland	Yes	No	No	No
direct-grant school	Yes	No	No	No

United Kingdom of Great Britain and Northern Ireland (noun)	direct-grant school (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	formerly a school that charged tuition fees and also received government grants in return for admitting certain non-paying students who were nominated by the local authorities