United Kingdom of Great Britain and Northern Ireland vs free house

United Kingdom of Great Britain and Northern Ireland and free house both are nouns.

Word	Noun	Adjective	Verb	Adverb
United Kingdom of Great Britain and Northern Ireland	Yes	No	No	No
free house	Yes	No	No	No

United Kingdom of Great Britain and Northern Ireland (noun)	free house (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	a public house that is not controlled by a brewery and so is free to sell different brands of beer and ale