United Kingdom of Great Britain and Northern Ireland vs National Trust

United Kingdom of Great Britain and Northern Ireland and National Trust both are nouns.

Word	Noun	Adjective	Verb	Adverb
United Kingdom of Great Britain and Northern Ireland	Yes	No	No	No
National Trust	Yes	No	No	No

United Kingdom of Great Britain and Northern Ireland (noun)	National Trust (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	an organization concerned to preserve historic monuments and buildings and places of historical interest or natural beauty; founded in 1895 and supported by endowment and private subscription