Whats the difference between Pound cake, loaf cake and short cake?

Originally, pound cakes were so called because they were made with a pound of flour, a pound of sugar, a pound of butter, and either a pound of eggs or a dozen eggs.

Today, the proportions are not always the same, but a true pound cake contains only flour, sugar, butter, and eggs. Flavoring may also be included, such as citrus zest or extracts, but a true pound cake does not contain any leavenings (baking powder/baking soda) or any liquids. A cake that does contain leavenings or liquid in addition to the traditional pound cake components is a butter cake.

A loaf cake is any cake baked in a loaf pan.

A shortcake is a small cake with fruit and cream. Traditionally, shortcakes are comprised of a scone, fresh strawberries and whipped cream, although a slice or individual sized pound cake, butter cake, or sponge cake is often used, a mixture of berries or other fruit is sometimes substituted for the strawberries, and creme fraiche is sometimes used in place of the whipped cream.