Tuxtla Gutierrez vs urban center

Tuxtla Gutierrez and urban center both are nouns.

Word	Noun	Adjective	Verb	Adverb
Tuxtla Gutierrez	Yes	No	No	No
urban center	Yes	No	No	No

Tuxtla Gutierrez (noun)	urban center (noun)
a city in southeastern Mexico	a large and densely populated urban area; may include several independent administrative districts