Preserves, Jams and Conserves are often used interchangeably. Both Jams and Conserves are a type of Preserve,  however the biggest distinction is that Conserves contain a higher level of fruit content than most Jams. ClearJams are usually referred to as Jellies. The ingredients used and how they are prepared determine the type of preserves; jams, jellies, and marmalades are all examples of different styles of fruit preserves that vary based upon the fruit used.