agitation vs contentment

agitation

noun
  • A disturbance of personal tranquillity; disturbance of someone's peace of mind. 

  • Excitement of public feeling by discussion, appeals, etc. 

  • The act of agitating, or the state of being agitated; the state of being disrupted with violence, or with irregular action; commotion. 

contentment

noun
  • The neurophysiological experience of satisfaction and being at ease in one's situation, body, and/or mind. 

  • happiness in one's situation; satisfaction 

  • The state or degree of being contented or satisfied. 

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