heat of passion vs irritation

heat of passion

noun
  • An outburst of anger that leads one to commit a criminal act, and is itself influenced by preceding events that might cause a reasonable person to lose self control. 

irritation

noun
  • The state of being irritated 

  • A things or person that annoys 

  • A condition of morbid excitability or oversensitiveness of an organ or part of the body; a state in which the application of ordinary stimuli produces pain or excessive or vitiated action. 

  • The act of irritating or annoying 

  • a state of inflammation or painful reaction to allergy or cell-lining damage. 

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