Trailokya has been translated as "three worlds," "three spheres," "three planes of existence," "three realms" and "three regions." These three worlds are identified in Hinduism and already appear in early Buddhist texts. The 3 "regions" of the world:
- Kamaloka or Kamadhatu: world of desires
- Rupaloka or Rupadhatu: world of form
- Arupaloka or Arupadhatu: world without form or desire