metropolis vs Cartagena

metropolis and Cartagena both are nouns.

Word	Noun	Adjective	Verb	Adverb
metropolis	Yes	No	No	No
Cartagena	Yes	No	No	No

metropolis (noun)	Cartagena (noun)
people living in a large densely populated municipality	a port in southeastern Spain on the Mediterranean
a large and densely populated urban area; may include several independent administrative districts	a port city in northwestern Colombia on the Caribbean