Appellate jurisdiction refers to the power of a higher court to review and potentially overturn the decision of a lower court. There are several synonyms for appellate jurisdiction, including appellate review, appeals court, appellate authority, and appellate oversight. These terms all refer to the same concept: the ability of a higher court to review and assess the legal decisions made by a lower court. Appellate jurisdiction is an important component of the judicial system, and ensures that legal decisions are made in a fair and consistent manner. Without appellate jurisdiction, there would be no system of checks and balances within the legal system.