Regeneration

Noun

1. Rebuilding or restructuring; large scale repair or renewal; revitalisation.

   "The conversion of so many old industrial buildings into living quarters was a major factor in the regeneration."

2. Spiritual rebirth; the change from a carnal or material life to a pious one
3. The renewal of the world at the second coming of Christ.
4. The process by which a water softener flushes out minerals extracted from the water supply.
5. The ability to rapidly heal substantial physical damage to one's body, or to spontaneously restore hit points.