discourage vs enlist

discourage

noun
  • Lack of courage 

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

  • To persuade somebody not to do (something). 

enlist

noun
  • One who is enlisted, usually in a military service. 

verb
  • To recruit the aid or membership of others. 

  • To enter on a list; to enroll; to register. 

  • To secure; to obtain. 

  • To voluntarily join a cause or organization, especially military service. 

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