North Atlantic Treaty Organization vs Britain

North Atlantic Treaty Organization and Britain both are nouns.

Word	Noun	Adjective	Verb	Adverb
North Atlantic Treaty Organization	Yes	No	No	No
Britain	Yes	No	No	No

North Atlantic Treaty Organization (noun)	Britain (noun)
an international organization created in 1949 by the North Atlantic Treaty for purposes of collective security	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