An aerodrome or airdrome is a location from which aircraft flight operations take place, regardless of whether they involve cargo, passengers or neither. Aerodromes include small general aviation airfields, large commercial airports and military airbases. The term airport may imply a certain stature (having satisfied certain certification criteria or regulatory requirements) that an aerodrome may not have achieved. That is to say, all airports are aerodromes, but not all aerodromes are airports. Usage of the term 'aerodrome' remains more common in the UK and Commonwealth nations, and is conversely almost unknown in American English.
A water aerodrome is an area of open water used regularly by seaplanes or amphibious aircraft for landing and taking off.
According to the International Civil Aviation Organization (ICAO) an aerodrome is "A defined area on land or water (including any buildings, installations and equipment) intended to be used either wholly or in part for the arrival, departure and surface movement of aircraft."