cicatrize vs pierce

cicatrize

verb
  • To form a scar. 

  • To treat or heal (a wound) by causing a scar or cicatrix to form. 

pierce

verb
  • To create a hole in the skin for the purpose of inserting jewelry. 

  • To penetrate; to affect deeply. 

  • To get to the heart or crux of (a matter). 

  • to break or interrupt abruptly 

  • To puncture; to break through. 

noun
  • A pierced earring. 

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