United Kingdom of Great Britain and Northern Ireland vs North Atlantic Treaty Organization

United Kingdom of Great Britain and Northern Ireland and North Atlantic Treaty Organization both are nouns.

Word	Noun	Adjective	Verb	Adverb
United Kingdom of Great Britain and Northern Ireland	Yes	No	No	No
North Atlantic Treaty Organization	Yes	No	No	No

United Kingdom of Great Britain and Northern Ireland (noun)	North Atlantic Treaty Organization (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 international organization created in 1949 by the North Atlantic Treaty for purposes of collective security