anger vs disgruntlement

anger

noun
  • A strong feeling of displeasure, hostility or antagonism towards someone or something, usually combined with an urge to harm, often stemming from perceived provocation, hurt, or threat. 

verb
  • To become angry. 

  • To cause such a feeling of antagonism in. 

disgruntlement

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

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