Non-statutory law refers to legal rules and regulations that are not created by governmental bodies. There are several synonyms for non-statutory law, including common law, case law, judge-made law, and customary law. Common law refers to legal principles and rules that have been developed through court decisions. Case law is legal precedent established by judicial decisions. Judge-made law refers to the power of judges to create new law through their decisions. Customary law refers to practices and behaviors in a particular community that are recognized as legal norms. While these terms may have slightly different meanings, they all refer to legal norms that are not set forth by legislation.