deliverance vs unburdening

deliverance

noun
  • The act of setting free or extricating from danger, imprisonment, bondage, evil, etc. 

  • Delivery in childbirth. 

  • The act of delivering or conveying something. 

unburdening

noun
  • The act by which one unburdens oneself. 

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