Grand Duchy - Metonymy

Metonymy

In Belgium, Grand Duché (French for grand duchy) is often used as a metonym to refer to the neighbouring Grand Duchy of Luxembourg. This is often done in order to avoid confusion with the Belgian province of the same name - when hearing Luxembourg, a Belgian would spontaneously think about the province rather than the Grand Duchy. At the same time, Royaume (French for Kingdom) would be used to refer to Belgium.