North Atlantic Treaty Organization vs Republic of Bulgaria

North Atlantic Treaty Organization and Republic of Bulgaria both are nouns.

Word	Noun	Adjective	Verb	Adverb
North Atlantic Treaty Organization	Yes	No	No	No
Republic of Bulgaria	Yes	No	No	No

North Atlantic Treaty Organization (noun)	Republic of Bulgaria (noun)
an international organization created in 1949 by the North Atlantic Treaty for purposes of collective security	a republic in the eastern part of the Balkan Peninsula in southeastern Europe