Jam is made with whole fruit that is cooked down to release the pectin. Jelly is made with fruit juice that pectin is added to. While many canner's of today use pectin in jam, it is not traditional....
Jams are made from juice and pulp.
Jellies are made from juice that the pulp has been strained from, so it is clear.
Preserves are made from the whole fruit or crushed fruit so that they have...
Jelly is made from the juice of the fruit with all the pulp strained out. Jam includes the pulp of the fruit and sometimes even whole bits of the chopped fruit.
A jam includes the flesh of the fruit (a jelly includes only the juice); technically, both jams and jellies are kinds of preserves, but people often think of a preserve as including the whole fruit...