Italian Republic vs European nation

Italian Republic and European nation both are nouns.

Word	Noun	Adjective	Verb	Adverb
Italian Republic	Yes	No	No	No
European nation	Yes	No	No	No

Italian Republic (noun)	European nation (noun)
a republic in southern Europe on the Italian Peninsula; was the core of the Roman Republic and the Roman Empire between the 4th century BC and the 5th century AD	any one of the countries occupying the European continent