Chihuahua vs urban center

Chihuahua and urban center both are nouns.

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

Chihuahua (noun)	urban center (noun)
an old breed of tiny short-haired dog with protruding eyes from Mexico held to antedate Aztec civilization	a large and densely populated urban area; may include several independent administrative districts
the largest state in Mexico; mostly high plateau
a city in northern Mexico in the state of Chihuahua; commercial center of northern Mexico