backslash vs poison

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).}} 

poison

verb
  • To place false information into (a cache) as part of an exploit. 

  • To cause (someone) to hate or to have unfair negative opinions. 

  • To use poison to kill or paralyse (somebody). 

  • To pollute; to cause to become poisonous. 

  • To cause to become much worse. 

  • To inhibit the catalytic activity of. 

noun
  • A substance that is harmful or lethal to a living organism when ingested. 

  • Any substance that inhibits catalytic activity. 

  • Something that harms a person or thing. 

  • An intoxicating drink; a liquor. (note: this sense is chiefly encountered in the phrases "name your poison" and "what's your poison ?") 

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