encouragement vs purgatory

encouragement

noun
  • Words or actions that increase someone's confidence 

  • Something that incites, supports, promotes, protects or advances; incentive 

  • The feeling of being encouraged 

  • The act of encouraging 

purgatory

adj
  • Tending to cleanse; expiatory. 

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

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