urban center vs Czestochowa

urban center and Czestochowa both are nouns.

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

urban center (noun)	Czestochowa (noun)
a large and densely populated urban area; may include several independent administrative districts	a city of southern Poland whose church contains the statue of the black Madonna which attracts many pilgrims