Power is the ability to do something or act in a certain way, while authority refers to the legal right or permission to do so. Therefore, power needs to be transformed into legal authority through legitimacy, which means that the exercise of power is seen as justified and appropriate by those who are subject to it. Legitimacy can be achieved through various means, such as elections, appointment through a recognized process, or the consent of those who are governed. Without legitimacy, the use of power may be seen as illegitimate or even tyrannical.