EU vs Portuguese Republic

EU and Portuguese Republic both are nouns.

Word	Noun	Adjective	Verb	Adverb
EU	Yes	No	No	No
Portuguese Republic	Yes	No	No	No

EU (noun)	Portuguese Republic (noun)
an international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members	a republic in southwestern Europe on the Iberian Peninsula; Portuguese explorers and colonists in the 15th and 16th centuries created a vast overseas empire (including Brazil)