Langue d'Oc, also known as Occitan, is a Romance language spoken in southern France and parts of Italy and Spain. It has various synonyms in English, including Provençal, Languedocien, and Gascon. Provençal refers specifically to the dialect of Occitan spoken in Provence, while Languedocien refers to the dialect spoken in Languedoc. Gascon, on the other hand, is a dialect of Occitan spoken in Gascony, a region in southwestern France. Other synonyms for Langue d'Oc include Langue d'Oïl, which refers to the group of Romance languages spoken in northern France, and Mediterranean Occitan, which emphasizes the language's connection to the Mediterranean region.