city vs Maracaibo

city and Maracaibo both are nouns.

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

city (noun)	Maracaibo (noun)
people living in a large densely populated municipality	a port city in northwestern Venezuela; a major oil center
a large and densely populated urban area; may include several independent administrative districts
an incorporated administrative district established by state charter