lifeline vs pardon

lifeline

noun
  • A source of salvation in a crisis. 

  • A particular crease in the palm. 

  • A line from the diver to a tender at the surface control point. 

  • A line to which a drowning or falling victim may cling. 

  • A means or route for transporting indispensable supplies. 

  • System or structure of vital importance to a community. 

  • On the deck of a boat, a line to which one can attach oneself to stay aboard on rough seas. 

pardon

noun
  • Forgiveness for an offence. 

  • An order that releases a convicted criminal without further punishment, prevents future punishment, or (in some jurisdictions) removes an offence from a person's criminal record, as if it had never been committed. 

intj
  • Often used when someone does not understand what another person says. 

verb
  • To forgive (a person). 

  • To refrain from exacting as a penalty. 

  • To grant an official pardon for a crime. 

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