How do jam and jelly differ?

The primary difference between jam and jelly involves the contents. Jam is made from whole fruit, meaning every edible part of the fruit is involved, while jelly is made from fruit juices. Jam is a thick, chunky spread, while jelly is a thinner, more evenly-textured spread. Jams may include things like seeds and pieces of fruit skin which create a very distinctive texture, setting them apart from jellies. Because jam includes whole fruit, it tends to have more of the vitamins and minerals found in the parent fruit, and it is also usually only made with one type of fruit, whereas jellies may involve a blend of juices