extinguishment vs fettering

extinguishment

noun
  • The act of extinguishing, putting out, or quenching, or the state of being extinguished. 

  • The annihilation or extinction of a right or obligation. 

fettering

noun
  • The act by which something is fettered or constricted. 

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