Stocks and broths are flavorful liquids made by simmering ingredients like meat, bones, vegetables, and herbs in water. They serve as a base for soups, sauces, and various dishes, enhancing their taste and nutritional value. Stocks typically use bones and are simmered longer for a richer flavor, while broths are made with meat and cooked for a shorter time. Both stocks and broths can be homemade or purchased pre-made. They are versatile in cooking, providing depth to recipes and can be used in cooking techniques like braising or poaching. Additionally, they are often used in culinary traditions around the world.