Superstate is a term that connotes a powerful and dominant governing entity. However, there are other words that can be used interchangeably with this term. One of these words is a "suprastate," which indicates an authority that transcends national boundaries. "Megalopolis" is another term that can be used to imply a giant urban area where economies and political systems are integrated. The word "empire" refers to a vast territorial dominion that is ruled by an emperor or monarch. An "hegemon" refers to a dominant state that commands influence over other states. Lastly, "superpower" is a term that can also be used to indicate a state with immense power and influence. Each of these words conveys the same idea of a mighty and influential governing system.