An airport is a location where aircraft such as fixed-wing aircraft, helicopters, and blimps take off and land. Aircraft may be stored or maintained at an airport. An airport consists of at least one surface such as a runway for a plane to take off and land, a helipad, or water for takeoffs and landings, and often includes buildings such as control towers, hangars and terminal buildings.
Larger airports may have fixed base operator services, seaplane docks and ramps, air traffic control, passenger facilities such as restaurants and lounges, and emergency services. A military airport is known as an airbase or air station. The terms aerodrome, airdrome, airfield, and airstrip may also be used to refer to airports, and the terms heliport, seaplane base, and STOLport refer to airports dedicated exclusively to helicopters, seaplanes, or short take-off and landing aircraft.
In colloquial use, the terms airport and aerodrome are often interchanged. However, in general, the term airport may imply or confer a certain stature upon the aviation facility that an aerodrome proper may not have achieved. In some jurisdictions, airport is a legal term of art reserved exclusively for those aerodromes certified or licensed as airports by the relevant governing organization[citation needed] (e.g. the U.S. Federal Aviation Administration (FAA), or Transport Canada) after meeting specified certification criteria or regulatory requirements. That is to say, in the purest sense, all airports are aerodromes, but not all aerodromes are airports. Other jurisdictions define an airport as one that is furnished with the customs offices expected of a port of entry,[citation needed] though the more general term for such aerodromes is airport of entry. In jurisdictions where there is no legal distinction between aerodrome and airport, the terms are often used according to the users' or managers' preference.
http://en.wikipedia.org/wiki/Airport
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