Frankfort vs city

Frankfort and city both are nouns.

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

Frankfort (noun)	city (noun)
a German city; an industrial and commercial and financial center	people living in a large densely populated municipality
the capital of Kentucky; located in northern Kentucky	a large and densely populated urban area; may include several independent administrative districts
	an incorporated administrative district established by state charter