the act of requiting.

a return or reward for service, kindness, etc.

a retaliation for a wrong, injury, etc.

something given or done as repayment, reward, punishment, etc., in return.

noun

amends , indemnification , indemnity , offset , quittance , recompense , redress , reimbursement , remuneration , reparation , repayment , restitution , satisfaction , setoff , counteraction , counterattack , counterblow , reciprocation , reprisal , retribution , revenge , tit for tat , vengeance , recaliation , retaliation