Barrel-shaped vases (and jugs). 'Barrel' is taken to include any shape whose sides have a steady gentle outward curvature - including shapes that are somewhat taller and more slender than a true barrel.
Bulbous and globe-shaped vases and bowls. A wide variety of shapes is encompassed here - spherical, bulb-shaped, onion-shaped etc. They grade into what could also be described as plump barrels, or baluster shapes, or squat pots - if you can't find it here try one of those categories.