Luxor vs urban center

Luxor and urban center both are nouns.

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

Luxor (noun)	urban center (noun)
a city in central Egypt on the east bank of the Nile that is a center for visitors to the ruins of and around Thebes	a large and densely populated urban area; may include several independent administrative districts