anguish vs frustrate

anguish

verb
  • To cause to suffer pain. 

  • To suffer pain. 

noun
  • Extreme pain, either of body or mind; excruciating distress. 

frustrate

verb
  • To cause stress or annoyance. 

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

  • To hinder or thwart. 

adj
  • ineffectual; useless; fruitless. 

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