With greatest respect to my close colleague HD, I'm not too sure that is the case...
An Aerodrome (as defined in the ANO & MATS 1):
Any area of land or water designed, equipped, set apart or
commonly used for affording facilities for the landing and departure
of aircraft.
And in the Aerodrome licencing manual:
Any area of land or water designed, equipped, set apart or
commonly used for affording facilities for the landing and departure
of aircraft and includes any area or space, whether on the ground,
on the roof of a building or elsewhere, which is designed,
equipped or set apart for affording facilities for the landing and
departure of aircraft capable of descending or climbing vertically,
but shall not include any area the use of which for affording
facilities for the landing and departure of aircraft has been
abandoned and has not been resumed.
It doesnt specify the difference between a customs aerodrome and a non-customs aerodrome. I think the whole airport / airfield / aerodrome name thing is all to do with local slang tendancies and language variations.
I have an Aerodrome Control Licence, at a customs aerodrome / airport whatever you want to call the place. I have my own name for it, ending *** hole.
Personally, I'd define an AIRFIELD as a grass runway aerodrome.
heehee.
Traaaaaaaaaaaaa.