Pumpkin shapes vary widely, with the most common being round, oval, and flattened. Round pumpkins are often used for traditional Halloween decorations, while oval pumpkins are popular for cooking and baking. Flattened pumpkins tend to have a unique appearance and are sometimes used for ornamental purposes. In addition to these basic shapes, some pumpkins have distinctive features like ribbing or warty textures. Pumpkin varieties such as Cinderella pumpkins are known for their flattened, squat shape, while Jack-o'-lantern pumpkins are typically round and smooth, making them ideal for carving. Each shape serves different culinary and decorative purposes.