Monarchies are of kings republics are of democracy
A Monarchy is a form of government in which power is actually or nominally embodied in individual ruling power or the monarch. It is a heredity political system wherein the people are not allowed to cast a vote for the monarch. The crown is passed from one generation to another.

Republic is a standard form of government. It is based on the principle that there should be no monarch and the people of the state should be able to choose their own government. Machiavelli helped define the term republic by saying that there could only be one, either a government rule or a king’s rule. The people can elect someone who represents their interests. The word republic is used for governments who give people their rights and do not keep them under authority. Republic follows the constitution and ensures that the government does not forget the rights of the citizens given for equality.