requital

1. The act of requiting.
2. Return, as for an injury or friendly act.

noun

1. Something to make up for loss or damage: amends, compensation, indemnification, indemnity, offset, quittance, recompense, redress, reimbursement, remuneration, reparation, repayment, restitution, satisfaction, setoff. See substitute.
2. The act of retaliating: counteraction, counterattack, counterblow, reciprocation, reprisal, retaliation, retribution, revenge, tit for tat, vengeance. Idioms: an eye for an eye, a tooth for a tooth, like for like, measure for measure. See attack/defend, forgiveness/vindictiveness.

The noun has 2 meanings:

Meaning #1: a justly deserved penalty
  Synonym: retribution

Meaning #2: an act of requiting; returning in kind