The term preserves is usually interchangeable with jams even though preserves contain chunks or pieces of the fruit whereas jams in some regions do not. Other names include: chutney, confit, conserve, fruit butter, fruit curd, fruit spread, jelly, and marmalade.
Some cookbooks define preserves as cooked and gelled whole fruit (or vegetable), which includes a significant portion of the fruit. In the English speaking world, the two terms are more strictly differentiated and, when this is not the case, the more usual generic term is ‘jam‘.
The singular preserve or conserve is used as a collective noun for high fruit content jam, often for marketing purposes. Additionally, the name of the type of fruit preserves will also vary depending on the regional variant of English being used.