There are many words used to call to mind what justice means, including but not limited to, fairness, equity, righteousness, and honor. Justice is a notion of moral rightness that encompasses the perspectives of integrity, ethics, religion, law, and rationality. They often say justice is blind, which means it is impartial and objective. Justice is repeatedly portrayed as a woman wearing a blindfold, holding a set of scales and a sword.
Mercy is a show of compassion or forgiveness granted by someone who has the power to punish or serve a sentence in a court of law or other situations. One example would be imprisonment instead of the death penalty for first-degree murder. Some believe that God shows mercy to his followers, or to show kindness, compassion, and forgiveness when justice would demand otherwise.