clemency,
mercifulness,
mercy leniency and compassion shown toward offenders by a person or agency charged with administering justice; "he threw himself on the mercy of the court"
jurisprudence,
law the branch of philosophy concerned with the law and the principles that lead courts to make the decisions they do
commutation -
the act of putting one thing or person in the place of another: "he sent Smith in for Jones but the substitution came too late to help"