Iceland vs NATO

Iceland and NATO both are nouns.

Word	Noun	Adjective	Verb	Adverb
Iceland	Yes	No	No	No
NATO	Yes	No	No	No

Iceland (noun)	NATO (noun)
an island republic on the island of Iceland; became independent of Denmark in 1944	an international organization created in 1949 by the North Atlantic Treaty for purposes of collective security
a volcanic island in the North Atlantic near the Arctic Circle