urban center vs Giza

urban center and Giza both are nouns.

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

urban center (noun)	Giza (noun)
a large and densely populated urban area; may include several independent administrative districts	an ancient Egyptian city on the west bank of the Nile opposite Cairo; site of three Great Pyramids and the Sphinx