attrit vs discourage

attrit

verb
  • To engage in attrition; to quit or drop out. 

  • To be reduced in quantity through attrition. 

  • To lose, or to kill, troops by attrition due to sustained firepower. 

  • To wear down through attrition, especially mechanical attrition. 

noun
  • One who voluntarily or involuntarily leaves a company; a termed employee. 

discourage

verb
  • To persuade somebody not to do (something). 

  • To extinguish the courage of; to dishearten; to depress the spirits of; to deprive of confidence; to deject. 

noun
  • Lack of courage 

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