backslash vs knife

backslash

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

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).}} 

knife

verb
  • To betray, especially in the context of a political slate. 

  • To positively ignore, especially in order to denigrate; compare cut. 

  • To cut with a knife. 

  • To use a knife to injure or kill by stabbing, slashing, or otherwise using the sharp edge of the knife as a weapon. 

  • To cut through as if with a knife. 

noun
  • A weapon designed with the aforementioned specifications intended for slashing and/or stabbing and too short to be called a sword. A dagger. 

  • A utensil or a tool designed for cutting, consisting of a flat piece of hard material, usually steel or other metal (the blade), usually sharpened on one edge, attached to a handle. The blade may be pointed for piercing. 

  • Any blade-like part in a tool or a machine designed for cutting, such as that of a chipper. 

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