NATO vs Iceland

NATO and Iceland both are nouns.

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

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