An appellate court is a type of court that hears appeals or challenges to decisions made by lower courts. There are several synonyms for appellate court, including court of appeals, appeals court, review court, and superior court. While the specific name may vary depending on the jurisdiction, the function remains the same: to review cases that have already been heard in a lower court and determine whether the decision made was legal and fair. Some countries have multiple levels of appellate courts, such as the United States, where there are federal and state courts of appeal. Regardless of the name, appellate courts play a vital role in ensuring justice is served.