urban center vs Perm

urban center and Perm both are nouns.

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

urban center (noun)	Perm (noun)
a large and densely populated urban area; may include several independent administrative districts	the administrative center of Perm Krai, Russia, located on the banks of the Kama River in the European part of Russia near the Ural Mountains