efface vs insert

efface

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

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

  • 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. 

insert

noun
  • A sequence of DNA inserted into another DNA molecule. 

  • A close-up shot used to draw attention to a particular element of a larger scene. 

  • A plug-in that adds an effect to an audio track. 

  • A pre-recorded segment included as part of a live broadcast. 

  • An image inserted into text. 

  • An expression, such as "please" or an interjection, that may occur at various points in an utterance. 

  • A mechanical component inserted into another. 

  • A promotional or instructive leaflet inserted into a magazine, newspaper, tape or disk package, etc. 

verb
  • To put in between or into. 

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