Chowder is a type of soup or stew that is popular in many parts of the world. Common ingredients for chowder include POTATOES and clams, which are both 8 and 5 letters respectively. POTATOES are a starchy vegetable that can be boiled, mashed, or fried, while clams are a type of shellfish that can be steamed, boiled, or baked. Both ingredients are often used to make chowder, adding flavor and texture to the dish.