city vs Cartagena

city and Cartagena both are nouns.

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

city (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
an incorporated administrative district established by state charter