misery vs purgatory

misery

noun
  • Cause of misery; calamity; misfortune. 

  • A bodily ache or pain. 

  • Great unhappiness; extreme pain of body or mind; wretchedness; distress; woe. 

  • poverty. 

purgatory

noun
  • Any situation where suffering is endured, particularly as part of a process of redemption. 

adj
  • Tending to cleanse; expiatory. 

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