discourage vs submit

discourage

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). 

noun
  • Lack of courage 

submit

verb
  • To yield (something) to another, as when defeated. 

  • To win a fight against (an opponent) by submission. 

  • To enter or put forward for approval, consideration, marking etc. 

  • To yield or give way to another. 

  • To subject; to put through a process. 

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