bad humour vs bile

bad humour

noun
  • irritability or surliness 

  • a state of irritability or surliness 

bile

noun
  • Bitterness of temper; ill humour; irascibility. 

  • A bitter brownish-yellow or greenish-yellow secretion produced by the liver, stored in the gall bladder, and discharged into the duodenum where it aids the process of digestion. 

  • Two of the four humours, black bile or yellow bile, in ancient and medieval physiology. 

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