Oder vs Oder River

Oder and Oder River both are nouns.

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

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

Oder and Oder River: a European river which rises in the Czech republic and flows through western Poland; flows into the Baltic Sea

Oder (noun)	Oder River (noun)
a European river which rises in the Czech republic and flows through western Poland; flows into the Baltic Sea	a European river which rises in the Czech republic and flows through western Poland; flows into the Baltic Sea