city vs Concepcion

city and Concepcion both are nouns.

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

city (noun)	Concepcion (noun)
people living in a large densely populated municipality	an industrial city in Chile to the south of Santiago
a large and densely populated urban area; may include several independent administrative districts
an incorporated administrative district established by state charter