erasure vs rubbing out

erasure

noun
  • The state of having been erased; total blankness. 

  • A tendency to ignore or conceal an element of society. 

  • The action of erasing; deletion; obliteration. 

  • The place where something has been erased. 

rubbing out

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