Super-power is a term used to describe a nation or state that has exceptional influence on the global stage, especially in matters of politics and economics. Some of the synonyms for super-power include hegemon, dominant power, major power, great power, global power, military superpower, economic powerhouse, and world leader. These words highlight the pivotal role such nations play in shaping global affairs, and their ability to shape the course of events both nationally and internationally. The term super-power has evolved over time - in the 20th century, it was primarily used to refer to the United States and the Soviet Union, and now it encompasses other nations such as China, Japan, and the European Union.