A Buddha is someone who is fully enlightened. A person who is fully enlightened, but not the Buddha of our time, is called an Arahant in Pali. Such a person has eradicated all ten hindrances to enlightenment:
- The belief in a permanent personality, ego
- Doubt, extreme skepticism
- Attachment to rites, rituals, and ceremonies
- Attachment to sense desires
- Ill-will, anger
- Craving for existence in the Form world (heavenly realms)
- Craving for existence in the Formless world (heavenly realms)
An anagami (non-returner) has completely eradicated the first five hindrances and never returns to earth or any other world system (planet, solar system). Such a person is re-born to a heavenly realm and attains enlightenment from there.
A sakadagami (once returner) has eradicated the first three hindrances and greatly weakened the fourth and fifth; attachment to sense desires and ill-will. Such a person will be re-born to either the human or heavenly realm and will attain enlightenment there.
A sottapanna (stream entrant) has eradicated the first three hindrances and will be re-born no more than seven more times and re-birth will either be as a human or a deva in a heavenly realm.
- The Complete Book of Buddha's Lists -- Explained. David N. Snyder, Ph.D., 2006.