JAM: contains chunks of product and is cooked to a federally-specified temperature.

JELLY: made from the juice of the fruit but does not contain product (i.e. it is clear in color). It also is cooked to a federally-specified temperature.

MARMALADE: made from the rind of a citrus fruit (only citrus fruits, there is no such thing as "strawberry marmalade"). It is also cooked to a federally-specified temperature.

SPREAD: anything NOT cooked to the legal requirements of jam, jelly, or marmalade. It's usually sweetened using another kind of fruit concentrate (often grape juice or corn syrup) —this is important— as it is the process of cooking to a high temperature that "sugarizes" the jams, jellies, and marmalades! Spreads have to be sweetened because they are not cooked to a high temperature.

CONSERVE: made with walnuts or raisins and usually not cooked, it is usually sweetened with sugar.

PRESERVE: according to the Federal Goverment "preserve" is synonymous with "jam."

FRUIT BUTTER: made with certain kinds of fruits (apple for example) cooked to a lower sugar level than jam, jellies, and marmalades — although the temperature is also regulated by the government.