The Makonde are known for their wood carving and elaborate masks, which are commonly used in traditional dances. There are two different kinds of wood carvings: shetani, (evil spirits), which are mostly carved in heavy ebony, tall, and elegantly curved with symbols and nonrepresentational faces; and ujamaa, which are totem-type carvings which illustrate lifelike faces of people and various figures. These sculptures are usually referred to as "family trees" because they tell stories of many generations.