Veneer is made of thin layers of wood glued together and applied to a substrate such as particle board or MDF.
Furniture made with wood veneer uses less wood and is more readily available than the same piece of furniture made with solid wood. Can be refinished. Compared to wood, one of the primary advantages of using veneer is stability because the chances of splitting or cracking are reduced. Further, the glue used provides additional strength, making the end result stronger than natural wood.
Slab front doors made from a veneer and applied to a substrate (which are commonly specified in modern design) are more stable and less expensive than a solid wood door. Exotic woods that might be cost-prohibitive can be found in veneers