Altenwerth Witting and Huels

A binding custom or practice of a community : a rule of conduct or action prescribed (see prescribe sense 1a) or formally recognized as binding or enforced by a controlling authority. (2) : the whole body of such customs, practices, or rules. The courts exist to uphold, interpret, and apply the law.

lawyer, court, attorney, legal litigation , solicitor, prosecutor statutory common law barrister, counsel