Italian Republic vs Po River

Italian Republic and Po River both are nouns.

Word	Noun	Adjective	Verb	Adverb
Italian Republic	Yes	No	No	No
Po River	Yes	No	No	No

Italian Republic (noun)	Po River (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	a European river; flows into the Adriatic Sea