A banneton is a basket in which free-formed bread is put to rise. The purpose is to shape the dough, and to let some moisture leave the surface of the dough.
French Bread Pans
A bread couche is a bed made of stiff fabric for shaped bread dough to rise in. It is used for bread that is baked free-standing, not in pans. It helps the dough keep its shape while proofing and rising.