Trent vs river

Trent and river both are nouns.

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

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