A decree is an authoritative order or official legal proclamation issued by a person or body with administrative or judicial jurisdiction. It primarily serves as a final court order or decision.
A ruling is an authoritative decision or pronouncement made by a court or an authoritative body like the IRS, which provides a formal decision on a matter of law.
Stare Decisis is a legal principle that mandates courts to follow judicial precedents set by previous cases when making decisions on new cases involving similar issues.
