Bon, also spelled Bön (Tibetan: བོན་, Wylie: bon, Lhasa dialect: [pʰø̃̀]) is considered to be the native pre-Buddhist religious tradition of Tibet. A distinction is sometimes made between: 1. * the Old Bon or Bön nying (Wylie: bon rnying), dating back to the pre-dynastic era; 2. * the Eternal Bon or Yungdrung Bön (Wylie: g.yung drung bon), the classical Bon tradition (which emerged in the 10th–11th centuries); and 3. * the New Bon or Bonsar (Wylie: bon gsar), a late syncretic movement dating back to the 14th century and active in eastern Tibet.