Courts play a critical role in interpreting the Constitution and ensuring the rule of law. They adjudicate disputes, evaluate the constitutionality of laws, and protect individual rights against potential governmental overreach. Courts are responsible for applying constitutional principles to real-world cases, setting important legal precedents. Through judicial review, courts can invalidate legislation or executive actions that conflict with the Constitution, maintaining a system of checks and balances among government branches. This interpretative function is essential for ensuring justice and upholding the rights of citizens in a democratic society.