Brno vs city

Brno and city both are nouns.

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

Brno (noun)	city (noun)
an industrial city in Moravia in Czech Republic to the southeast of Prague	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts
	an incorporated administrative district established by state charter