Donetske vs urban center

Donetske and urban center both are nouns.

Word	Noun	Adjective	Verb	Adverb
Donetske	Yes	No	No	No
urban center	Yes	No	No	No

Donetske (noun)	urban center (noun)
an industrial city in the Donets Basin	a large and densely populated urban area; may include several independent administrative districts