Political Science.

Forms of Government:
Democracy
Monarch
Communism
Dictatorship
Socialism
Aristocracy
Totalitarianism
Anarchy
Ergatocracy
Federalism
Feudalism
Meritocracy
Military
Plutocracy
Tribalism
Kleptocracy
Republicanism
Capitalism
Autocracy
Statism
Electocracy
Bureaucracy
Geniocracy
Technocracy
Oligarchy
Theocracy
Colonialism.

Government is a group of people vested with power to make laws and govern a country or a state.

Political Science deal with political activities, power and behavior .