The term "US President" is the most common way to refer to the head of state and head of government in the United States. However, there are several synonyms that can be used interchangeably. Some of these include POTUS (President of the United States), Commander in Chief, Chief Executive, and the Leader of the Free World. Other less common synonyms include the Oval Office Occupant or the White House Resident. Regardless of the synonym used, the US President is a critical player in American politics, responsible for leading the country through a variety of political and economic challenges, and representing the United States on the global stage.