An energy drink is a type of drink containing stimulant compounds, usually caffeine, which is marketed as providing mental and physical stimulation.

A soft drink is a drink that usually contains water, a sweetener, and a natural and/or artificial flavoring. The sweetener may be a sugar, high-fructose corn syrup, fruit juice, a sugar substitute, or some combination of these.

Carbonated beverages are prepared by mixing the flavored syrup with carbonated water, both chilled. Carbonation levels range up to 5 volumes of CO2 per liquid volume.