altitude sickness vs nausea

altitude sickness

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

nausea

noun
  • A feeling of illness or discomfort in the digestive system, usually characterized by a strong urge to vomit. 

  • Strong dislike or disgust. 

  • Motion sickness. 

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