D.O.P.:

(Denominazione di Origine Protetta; also, in Italy, D.O.C.G. or D.O.C.): D.O.P. (Protected Designation of Origin) status is reserved for wines of superior quality, with clear and distinctive characteristics, produced in delimited areas, with specific production regulations governing vine varieties, yields per hectare, viticultural systems and winemaking techniques. These wines, before being marketed, are monitored for quality by special committees, which authorize the application of the neck labels of the Prosecco D.O.C. and D.O.C.G. Consortia. They can include all styles of wine

Disgorgement (or dégorgement):

the process by which deposits are removed in the production of Classic Method sparkling wine; its date, if stated on the label, is indicative of the “life” of the sparkling wine because from then on the wine’s quality tends to decrease over time