The Lemanic Arc (French: Arc lémanique) is the region on the north side of Lake Léman, stretching out from Geneva to Lausanne and Montreux. Its parts are Geneva, La Côte, Lausanne, Lavaux, La Riviera and le Chablais.
Romandy (French: Romandie or Suisse romande; Arpitan: Romandia) is the French-speaking historical and cultural region of Switzerland. In 2020, about 2 million people, or 22.8% of the Swiss population, lived in Romandy. The majority of the romand population lives in the western part of the country, especially the Arc Lémanique region along Lake Geneva, connecting Geneva, Vaud, and the Lower Valais.
Lausanne (/loʊˈzæn/loh-ZAN, US also /loʊˈzɑːn/loh-ZAHN; French:[lozan]; Arpitan: Losena[lɔˈzəna]) is the capital and largest city of the Swiss French-speaking canton of Vaud, in Switzerland. The Olympic capital, it is a hilly city situated on the shores of Lake Geneva, about halfway between the Jura Mountains and the Alps, and facing the French town of Évian-les-Bains across the lake. Lausanne is located (as the crow flies) 51.7 kilometres (32 miles) northeast of Geneva, the nearest major city. The Federal Supreme Court of Switzerland convenes in Lausanne, although it is not the de jure capital of the nation.
Lake Geneva region in the context of French-speaking Switzerland
Romandy is the French-speaking historical and cultural region of Switzerland. In 2020, about 2 million people, or 22.8% of the Swiss population, lived in Romandy. The majority of the romand population lives in the western part of the country, especially the Arc Lémanique region along Lake Geneva, connecting Geneva, Vaud, and the Lower Valais.