Seyhan vs metropolis

Seyhan and metropolis both are nouns.

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

Seyhan (noun)	metropolis (noun)
a city in southern Turkey on the Seyhan River	people living in a large densely populated municipality
a Turkish river flowing south southwest into the Mediterranean	a large and densely populated urban area; may include several independent administrative districts