El Paso vs metropolis

El Paso and metropolis both are nouns.

Word	Noun	Adjective	Verb	Adverb
El Paso	Yes	No	No	No
metropolis	Yes	No	No	No

El Paso (noun)	metropolis (noun)
a city in western Texas on the Mexican border; located on the northern bank of the Rio Grande across from the Mexican city of Juarez	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts