airsick vs trainsick

airsick

adj
  • Nauseated due to the effects of motion of an aircraft; suffering from motion sickness caused by air travel. 

trainsick

adj
  • Suffering from sickness, nausea or dizziness due to the motion of a train. 

How often have the words airsick and trainsick occurred in a corpus of books? (source: Google Ngram Viewer )