Restitution is the act of making up for damages or harm. Remember the time you knocked the ball out of the park, scoring a home run but breaking a house's window in the process? You had to make restitution for the broken window, paying for its replacement.
The noun restitution means both "restoring something to its original state" and "returning something to its rightful owner," like a public apology that leads to the restitution of a person's honor and reputation. Restitution also has a specific legal meaning — an order given by a judge to a convicted criminal to make amends for the crime. For examples, judges often order people to pay restitution for the damage they cause.