dyscrasia vs sickness

dyscrasia

noun
  • Imbalance of the four bodily humors (blood, black and yellow bile, phlegm) that was thought to cause disease. 

  • Any bodily disorder, especially regarding the blood. 

sickness

noun
  • Nausea; qualmishness; as, sickness of stomach. 

  • The analogical misuse of a rarer or marked grammatical case in the place of a more common or unmarked case. 

  • The quality or state of being sick or diseased; illness. 

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