Frankfurt vs Frankfort

Frankfurt and Frankfort both are nouns.

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

As nouns, Frankfurt and Frankfort are synonyms defined as:

Frankfurt and Frankfort: a German city; an industrial and commercial and financial center

Other synonyms of Frankfurt include Frankfurt on the Main.

Frankfurt (noun)	Frankfort (noun)
a German city; an industrial and commercial and financial center	a German city; an industrial and commercial and financial center
	the capital of Kentucky; located in northern Kentucky