Bonn is a proper noun referring to the western German city (capital of North Rhine-Westphalia’s Cologne region). In English, it’s typically used as a name for the city or as a surname; its pronunciation is short, nasal, and vowel-light, with a rounded onset. The word functions as a place-name and can appear in discussions of geography, history, or travel. The capitalized form signals a proper noun.
Full pronunciation guide
