Regeneration (noun)

1. The process of renewing or restoring something to a former condition or position.
2. The process of growing new cells or tissues to replace those that have been lost or damaged.
3. The process of spiritual or moral renewal.

Origin:

From latin regenere ("to be born again"), from re- + genere ("to produce, bege.t")

Examples:

1. The regeneration of the damaged ecosystem will take several decades.
2. The regeneration of the city's waterfront has brought new life to the area.
3. The regeneration of his career was due to his perseverance and hard work.
4. The regeneration of the liver is a complex process involving multiple mechanisms.
5. The regeneration of her faith brought her peace and happiness.