Soft drinks are nonalcoholic beverages, often sweetened and flavored, and many are carbonated. Colas have a distinctive flavor traditionally associated with kola and spices, while lemon-lime sodas offer a lighter citrus profile. The category also includes sparkling mixers, such as tonic-style or bitter-flavored drinks, which are often served on their own or combined with other beverages. Energy drinks form another branch, typically distinguished by added caffeine and other stimulating ingredients; they are not simply another flavor of soda. Examples in this collection include cola brands such as Coca-Cola and Pepsi, lemon-lime drinks such as 7UP and Sprite, Schweppes mixers, and Monster Energy. These products illustrate the range of styles grouped under the broad soft-drink label.