Enhancement

noun

1. The act of enhancing, or the state of being enhanced; increase in degree or extent; augmentation; aggravation: as, the enhancement of value, price, enjoyment, pleasure, beauty, evil, grief, punishment, crime, etc.
2. The act of increasing, or state of being increased; augmentation; aggravation.

   "the enhancement of value, price, enjoyments, crime"

3. an improvement
4. an improvement that makes something more agreeable