Kingdom of Belgium vs North Atlantic Treaty Organization

Kingdom of Belgium and North Atlantic Treaty Organization both are nouns.

Word	Noun	Adjective	Verb	Adverb
Kingdom of Belgium	Yes	No	No	No
North Atlantic Treaty Organization	Yes	No	No	No

Kingdom of Belgium (noun)	North Atlantic Treaty Organization (noun)
a monarchy in northwestern Europe; headquarters for the European Union and for the North Atlantic Treaty Organization	an international organization created in 1949 by the North Atlantic Treaty for purposes of collective security