Urban (Adjective) = In relation to a city or town.
Synonyms: City, Town, Civic, Metropolitan, Municipal, Sub-urban
Example: Uttar Pradesh has the highest number of urban population.
Urbane (Adjective) = Courteous and refined in a manner.
Synonyms: Cultured, Debonair, Elegant, Sophisticated, Well-bred,
Example: He is charming and urbane.