new town vs United Kingdom of Great Britain and Northern Ireland

new town and United Kingdom of Great Britain and Northern Ireland both are nouns.

Word	Noun	Adjective	Verb	Adverb
new town	Yes	No	No	No
United Kingdom of Great Britain and Northern Ireland	Yes	No	No	No

new town (noun)	United Kingdom of Great Britain and Northern Ireland (noun)
a planned urban community created in a rural or undeveloped area and designed to be self-sufficient with its own housing and education and commerce and recreation	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