irritation vs mollification

irritation

noun
  • 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 state of being irritated 

  • The act of irritating or annoying 

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

mollification

noun
  • The act of mollifying. 

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