Air navigation can be defined as the science of successfully piloting an aircraft from one point to another. Synonyms for the term are many and varied and include aviation, flight navigation, aerial navigation, and air traffic control. Aviation refers to the operation of aircraft, while flight navigation is concerned with the planning of a flight route. Aerial navigation, on the other hand, refers to the process of finding the position, direction, and speed of an aircraft. Air traffic control is the process of directing and regulating the movement of air traffic. These synonyms demonstrate the many different complexities and challenges involved in successfully navigating an aircraft through the air.