Denominazione di Origine Controllata (D.O.C.) : The Italian system for defining wine regions and wine names. In addition, the D.O.C.G. (Denominazione di Origine Controllata e Garantita) covers regions willing to submit their wines to tougher requirements, 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.