city vs Lublin

city and Lublin both are nouns.

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

city (noun)	Lublin (noun)
people living in a large densely populated municipality	an industrial city of eastern Poland
a large and densely populated urban area; may include several independent administrative districts
an incorporated administrative district established by state charter