disarm vs touch off

disarm

verb
  • To disable the security systems on. 

  • To lay down arms; to stand down. 

  • To deprive of the means or the disposition to harm; to render harmless or innocuous. 

  • To deprive of weapons; to deprive of the means of attack or defense; to render defenseless. 

  • To reduce one's own military forces. 

noun
  • The act of depriving a person of a weapon they carry. 

touch off

verb
  • To start; to cause, especially used for unstable situations that may magnify if disturbed. 

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