efface vs institute

efface

verb
  • To make oneself inobtrusive as if due to modesty or diffidence. 

  • Of the cervix during pregnancy, to thin and stretch in preparation for labor. 

  • To cause to disappear as if by rubbing out or striking out. 

  • To erase (as anything impressed or inscribed upon a surface); to render illegible or indiscernible. 

institute

verb
  • To begin or initiate (something); to found. 

  • To invest with the spiritual charge of a benefice, or the care of souls. 

  • To nominate; to appoint. 

noun
  • An organization founded to promote a cause 

  • The person to whom an estate is first given by destination or limitation. 

  • An institution of learning; a college, especially for technical subjects 

  • The building housing such an institution 

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