engendering vs protraction

engendering

noun
  • The act by which something is engendered. 

protraction

noun
  • The act of protracting 

  • The condition of being protracted 

  • The act of making a plot on paper. 

  • The lengthening of a short syllable 

  • An anterior movement on the horizontal plane; The forward movement of the tongue or of a limb 

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