# ἐξουσία/exousia This word is a type of thing. It is a noun. * This word can mean authority. Authority is the right or permission someone has to rule over someone else. * This word can mean the right that someone has to do something or decide something. * This word can mean power or ability to do something. * This word can mean ruler. When used this way, this word is used to talk about a person, angel, or demon who has been given power or permission to do something. * This word can mean domain or jurisdiction. When used this way, this word is used to talk about the place or area where a person rules or has authority.