humour vs wittiness

humour

noun
  • The quality of being amusing, comical, funny. 

  • Any of the fluids in an animal body, especially the four "cardinal humours" of blood, yellow bile, black bile and phlegm that were believed to control the health and mood of the human body. 

  • Either of the two regions of liquid within the eyeball, the aqueous humour and vitreous humour. 

  • A mood, especially a bad mood; a temporary state of mind or disposition brought upon by an event; an abrupt illogical inclination or whim. 

verb
  • To pacify by indulging. 

wittiness

noun
  • the quality of being witty 

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