Spain vs European Union

Spain and European Union both are nouns.

Word	Noun	Adjective	Verb	Adverb
Spain	Yes	No	No	No
European Union	Yes	No	No	No

Spain (noun)	European Union (noun)
a parliamentary monarchy in southwestern Europe on the Iberian Peninsula; a former colonial power	an international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members