Kharkov vs urban center

Kharkov and urban center both are nouns.

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

Kharkov (noun)	urban center (noun)
a city in northeastern Ukraine; former capital of the Ukraine	a large and densely populated urban area; may include several independent administrative districts