anguish vs sadden

anguish

verb
  • To suffer pain. 

  • To cause to suffer pain. 

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

sadden

verb
  • To make sad or unhappy. 

  • To darken a color during dyeing. 

  • To become sad or unhappy. 

  • To render heavy or cohesive. 

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