What is constitutional, statutory, case, and common law?

constitutional law: Constitutional law is a body of law that defines the role, powers, and structure of different entities within a state, namely, the executive, the parliament or legislature, and the judiciary.

statutory law: Statutory law or statute law is written law passed by a body of the legislature. This is as opposed to oral or customary law, or regulatory law promulgated by the executive or common law of the judiciary. Statutes may originate with national, state legislatures, or local municipalities.

case law: Case law is the collection of past legal decisions written by courts and similar tribunals in the course of deciding cases, in which the law was analyzed using these cases to resolve ambiguities for deciding current cases. These past decisions are called "case law", or precedent.

common law: In law, common law is the body of law created by judges and similar quasi-judicial tribunals by virtue of being stated in written opinions. The defining characteristic of “common law” is that it arises as precedent.

Explanation:

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