ambiance vs humour

ambiance

noun
  • A particular mood or atmosphere of an environment or surrounding influence. 

  • A secondary color of a polygon that becomes more pronounced with shading. 

humour

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

  • 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. 

verb
  • To pacify by indulging. 

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