city vs Nova Lisboa

city and Nova Lisboa both are nouns.

Word	Noun	Adjective	Verb	Adverb
city	Yes	No	No	No
Nova Lisboa	Yes	No	No	No

city (noun)	Nova Lisboa (noun)
people living in a large densely populated municipality	a city in the mountains in western Angola
a large and densely populated urban area; may include several independent administrative districts
an incorporated administrative district established by state charter