Isere vs Isere River

Isere and Isere River both are nouns.

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

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

Isere and Isere River: a river in southeastern France; a tributary of the Rhone

Isere (noun)	Isere River (noun)
a river in southeastern France; a tributary of the Rhone	a river in southeastern France; a tributary of the Rhone