A "rule" is a guideline or principle that dictates how people should behave or what actions are acceptable in a specific context. Rules can be formal, like laws established by governments, or informal, like social norms within a community. They help maintain order and ensure fairness by providing clear expectations for behavior. In various settings, such as schools, workplaces, and sports, rules are essential for creating a structured environment. For example, in a game of soccer, rules determine how the game is played, including how points are scored and what constitutes a foul. Following rules helps everyone understand their roles and responsibilities.