Hudud is an Arabic word that refers to the boundaries or limits set by Allah in the Quran. In Islamic law, it refers to specific crimes that carry predetermined punishments. However, there are several synonyms used for the term Hudud, including "Shariah law," "Islamic law," "Qisas," "Tazir," "Jinaya," and "Qanun-i-Shahadat." Shariah law is the Islamic legal system that governs the behavior of Muslims. Qisas refers to the law of retaliation, while Tazir is a form of criminal law that is implemented at the discretion of the judge. Jinaya is the law of crimes that are not specified in the Quran, and Qanun-i-Shahadat is the law of evidence.