A soft drink (also called soda, pop, coke[citation needed], soda pop, fizzy drink, or carbonated beverage) is a non-alcoholic beverage that typically contains carbonated water, a sweetening agent, and a flavoring agent. The sweetening agent may be sugar, high-fructose corn syrup, or a sugar substitute(in the case of diet drinks). A soft drink may also contain caffeine or fruit juice.The soft drink industry is one of the most highly profitable industries.