In the United States, "jelly," "jam," and "preserves" are popular foods. They are made from many kinds of fruit. "Marmalade" is less popular, and made only from citrus fruits, usually oranges. Marmalade has little bits of orange peel in it. It is lumpy. The bits of peel are bitter. It has a mixture of sweet and bitter tastes. Children often dislike it. Jelly, jam, and preserves do not have any peel in them. They taste fruity and sweet. There is no bitterness. Jelly is completely clear, is made from fruit juice, and is only solid because pectin is added to it. Jam contains fruit pulp. Preserves have visible bits of fruit in them and are somewhat lumpy. In the United States, the most popular and common kinds of jelly, jam, and preserves are grape, strawberry, raspberry, apricot, and cherry. Children love peanut-butter-and-jelly sandwiches, sometimes called "PB＆J." The jelly is often grape jelly. We think of marmalade as British. We eat it at breakfast on toast, rolls, or scones.

Marmalade is made from citrus, whereas jam could be made from any fruit :)

Marmalade is made from oranges and jam is made from any other fruit, typically Raspberry, Strawberry, Blackberry, Blackcurrant, or any other local or national fruit. The word marmalade meant quince jam and comes into English via French and Portuguese, deriving from 'marmelo' meaning quince. Further back, the origin is Latin and Greek, from terms meaning honey-apple, which was the fruit resulting from the grafting of an apple onto a quince.