Law commonly refers to a system of rules created and enforced through social or governmental institutions to regulate behavior,[2] with its precise definition a matter of longstanding debate.[3][4][5] It has been variously described as a science[6][7] and the art of justice.[8][9][10] State-enforced laws can be made by a group legislature or by a single legislator, resulting in statutes; by the executive through decrees and regulations; or established by judges through precedent, usually in common law jurisdictions.