Apron - A defined area, on a land aerodrome, intended to accommodate aircraft for purposes of loading or unloading passengers, mail or cargo, fuelling, parking or maintenance. (ICAO)
Manoeuvering area - That part of an aerodrome to be used for the takeoff, landing and taxiing of aircraft, excluding aprons
Movement area - That part of an aerodrome to be used for the takeoff, landing and taxiing of aircraft, consisting of the manoeuvring area and the apron(s)
ICAO- AERODROME STANDARDS-Aerodrome design and operation.