Seyhan vs Seyhan River

Seyhan and Seyhan River both are nouns.

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

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

Seyhan and Seyhan River: a Turkish river flowing south southwest into the Mediterranean

Seyhan (noun)	Seyhan River (noun)
a city in southern Turkey on the Seyhan River	a Turkish river flowing south southwest into the Mediterranean
a Turkish river flowing south southwest into the Mediterranean