purgatory vs woe

purgatory

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

adj
  • Tending to cleanse; expiatory. 

woe

noun
  • Great sadness or distress; a misfortune causing such sadness. 

  • A curse; a malediction. 

  • Calamity, trouble. 

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