Blida vs urban center

Blida and urban center both are nouns.

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

Blida (noun)	urban center (noun)
a city in northern Algeria at the foot of the Atlas Mountains to the southwest of Algiers	a large and densely populated urban area; may include several independent administrative districts