disgruntlement vs ill humor

disgruntlement

noun
  • The state of being disgruntled, usually displayed in a stereotypical form such as frowning and annoyance; the acts of sulky dissatisfaction. 

ill humor

noun
  • irritability or surliness 

  • bad temper 

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