"Airshow" rather than "aeroshow"

One of those thoughts that occurs whilst washing dishes.

When I go down to the aerodrome to watch the aeroplanes performing aerobatics for the enjoyment of the crowd, why is this not an aeroshow?

What is the etymology of airshow? Is it of US origin? The Flight Archive makes reference to a “Pan American Air Show” in 1919 but for European events at the time it prefers “Aero Salon” or “Aeronautical Exhibition”.

cf airliner vs aeroliner

Yours curiously…