heist vs liberate

heist

verb
  • To steal, rob, or hold up (something). 

noun
  • A robbery or burglary, especially from an institution such as a bank or museum. 

  • A fiction genre in which a heist is central to the plot; a work in such a genre. 

liberate

verb
  • To acquire from another by theft or force: to steal, to rob. 

  • To release from chemical bonds or solutions. 

  • To acquire from an enemy during wartime, used especially of cities, regions, and other population centers. 

  • To release from servitude or unjust rule. 

  • To release from slavery: to manumit. 

  • To release from restraint or inhibition. 

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