indigestion vs nausea

indigestion

noun
  • A condition of heartburn, nausea, etc. most often caused by eating too quickly. 

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 indigestion and nausea occurred in a corpus of books? (source: Google Ngram Viewer )