Trent vs Trent River

Trent and Trent River both are nouns.

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

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

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

Other synonyms of Trent include River Trent.

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