Denominazione di Origine Controllata e Garantita (D.O.C.G.) : The Italian system for defining wine regions and wine names. D.O.C.G. wines are submitted to tougher requirements than those labeled D.O.C. (Denominazione di Origine Controllata), including tasting approval.
Appellation: Defines the area where a wine's grapes were grown, such as Bordeaux, Gevrey-Chambertin, Alexander Valley or Russian River Valley. Regulations vary widely from country to country. In order to use an appellation on a California wine label, for example, 85 percent of the grapes used to make the wine must be grown in the specified district.