city vs Korinthos

city and Korinthos both are nouns.

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

city (noun)	Korinthos (noun)
people living in a large densely populated municipality	the modern Greek port near the site of the ancient city that was second only to Athens
a large and densely populated urban area; may include several independent administrative districts
an incorporated administrative district established by state charter