anguish vs anxiety

anguish

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

verb
  • To cause to suffer pain. 

  • To suffer pain. 

anxiety

noun
  • A state of restlessness and agitation, often accompanied by a distressing sense of oppression or tightness in the stomach. 

  • An unpleasant state of mental uneasiness, nervousness, apprehension and obsession or concern about some uncertain event. 

  • An uneasy or distressing desire (for something). 

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