Basia vs urban center

Basia and urban center both are nouns.

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

Basia (noun)	urban center (noun)
the second largest city in Iraq; an oil port in southern Iraq	a large and densely populated urban area; may include several independent administrative districts