affliction vs anxiety

affliction

noun
  • A state of pain, suffering, distress or agony. 

  • Something which causes pain, suffering, distress or agony. 

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 affliction and anxiety occurred in a corpus of books? (source: Google Ngram Viewer )