altitude sickness vs carsickness

altitude sickness

noun
  • A pathological condition caused by oxygen deficiency at high altitudes; symptoms include shortness of breath, nausea, and nosebleed. 

carsickness

noun
  • Motion sickness caused by riding in a motor car. 

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