National Trust vs United Kingdom of Great Britain and Northern Ireland

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

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

National Trust (noun)	United Kingdom of Great Britain and Northern Ireland (noun)
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	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