Trent River vs Trent

Trent River and Trent both are nouns.

Word	Noun	Adjective	Verb	Adverb
Trent River	Yes	No	No	No
Trent	Yes	No	No	No

As nouns, Trent River and Trent are synonyms defined as:

Trent River and Trent: a river in central England that flows generally northeastward to join with the Ouse River and form the Humber

Other synonyms of Trent River include River Trent.

Trent River (noun)	Trent (noun)
a river in central England that flows generally northeastward to join with the Ouse River and form the Humber	a city in northern Italy (northwest of Venice) on the River Adige; the site of the Council of Trent
	a river in central England that flows generally northeastward to join with the Ouse River and form the Humber