The Yoruba are a major African ethnic group; in their culture twins are traditionally very important beings. In the Yoruba language "ibeji" literally means "twins". Carved wooden figures made to house the soul of a dead twin are also called ibeji. These wooden figures, six to ten inches high and carved with the family mask, are often well tended. The Yoruba people believe that this care and tending helps ensure the survival of the other twin. In the Yoruba traditional religion, there is a deity that represents twins called Orisha Ibeji or Orisa Ibeji.