The term "trial court" is commonly used in the legal system to refer to the initial court where a legal case is heard. However, there are several other synonyms that can be used to describe this type of court. One possible synonym is "court of first instance", which conveys the idea that this is the court where a case is first heard and determined. Another possibility is "lower court", which emphasizes the fact that there may be higher courts that can hear appeals from the initial decision. Finally, the term "district court" may be used in some jurisdictions to refer to the trial court, particularly in the context of federal or state judicial systems.