Democracy originated from the Greek words "demos" meaning people and "kratia" meaning rule. It is defined as a system of governance where citizens elect representatives to form the governing body. Key features of democracy include representatives elected by the people making major decisions, free and fair elections where the current rulers could lose power, each citizen having an equal vote, and the government being limited by constitutional law and citizen rights. Both direct democracy, where citizens vote directly on decisions, and representative democracy, where citizens elect representatives, exist as forms of democracy.