backslash vs scar

backslash

noun
  • The punctuation mark \. 

  • Used erroneously in reference to, or in reading out, the ordinary slash, that is, the punctuation mark /. 

  • |passage= […] I was trying to find a web-site for which I had been given the following address: http://www.isop.ucla.edu/pacrim/pubs/korjournal.htm. […] I began to work backwards, removing first the last part of the address following the last backslash (/korjournal.htm).}} 

verb
  • To escape (a metacharacter) by prepending a backslash that serves as an escape character, thereby forming an escape sequence. 

scar

noun
  • A permanent mark on the skin, sometimes caused by the healing of a wound. 

  • A rock in the sea breaking out from the surface of the water. 

  • A cliff or rock outcrop. 

  • A bare rocky place on the side of a hill or mountain. 

  • A permanent negative effect on someone's mind, caused by a traumatic experience. 

  • Any permanent mark resulting from damage. 

  • A marine food fish, the scarus or parrotfish (family Scaridae). 

verb
  • To mark the skin permanently. 

  • To form a scar. 

  • To affect deeply in a traumatic manner. 

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