Just as ‘owls’ in French can be either chouettes or hiboux (the hiboux have the tufts that look like ears) and ‘chestnuts’ can be either marrons or châtaignes, a pumpkin can be either a citrouille or a potiron.
There is actually a difference: a citrouille is round on the bottom (a potiron is flat) and according to some, better in pies (people in northern France like a savoury tarte à la citrouille, with onions).
There are also mini citrouilles called Jack-Be-Little, which people like to stuff and bake.
mélange d’épices à citrouille: a mix of pumpkin spices
Image by Infrogmation of New Orleans