The authority or related to a person (such as a monarch) ruling with unlimited and absolute power and authority.
Autocratic describes a way of ruling, but not in a nice way. An autocratic leader is one who rules with an iron fist; in other words — someone with the behavior of a dictator. Autocratic rulers don’t tend to be popular. They use fear and control to gain total power over their people.
autocracy:
Government in which one person possesses unlimited power.
autocrat:
1: A person (such as a monarch) ruling with unlimited authority
2: One who has undisputed influence or power