get-out-of-jail-free card vs immunity

get-out-of-jail-free card

immunity

noun

  • An exemption from specified duties, such as payments or services. 

  • An exemption from penance. 

  • An exemption given to a player from losing or being withdrawn from play. 

  • A resistance to a specific thing. 

  • An exemption from prosecution. 

  • Protective resistance against disease. 

How often have the words get-out-of-jail-free card and immunity occurred in a corpus of books? (source: Google Ngram Viewer )