Fountain beverage is a term used to describe drinks that are served from a fountain, such as SODA and cola. The two most popular fountain beverages are SODA (4 letters) and cola (4 letters). SODA is a carbonated soft drink that is usually flavored with fruit or other natural flavors. Cola is a type of SODA that is flavored with the extract of the kola nut and other ingredients. Both SODA and cola are popular fountain beverages that can be found in many restaurants and convenience stores.