nausea vs seasickness

nausea

noun
  • Motion sickness. 

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

  • Strong dislike or disgust. 

seasickness

noun
  • Nausea, dizziness etc caused by the motion of a ship; a form of motion sickness. 

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