Air sickness and Motion sickness

Air sickness noun - Motion sickness experienced while traveling by air (especially during turbulence).

Motion sickness and air sickness are semantically related. In some cases you can use "Motion sickness" instead a noun phrase "Air sickness".

Motion sickness noun - The state of being dizzy or nauseated because of the motions that occur while traveling in or on a moving vehicle.

Air sickness and motion sickness are semantically related. Sometimes you can replace phrase "Air sickness" with "Motion sickness", this phrases are similar.