frustrate vs put off

frustrate

verb
  • To hinder or thwart. 

  • To cause stress or annoyance. 

  • To disappoint or defeat; to vex by depriving of something expected or desired. 

adj
  • ineffectual; useless; fruitless. 

put off

verb
  • To cause to dislike; to discourage (from doing). 

  • To procrastinate. 

  • To emit; to give off (an odor, smoke, etc.). 

  • To distract; to disturb the concentration of. 

  • To delay (a task, event, etc.). 

adj
  • daunted or fazed 

  • offended, repulsed 

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