assault vs guarding

assault

noun
  • A non-competitive combat between two fencers. 

  • A violent onset or attack with physical means, for example blows, weapons, etc. 

  • A violent verbal attack, for example with insults, criticism, and the like 

  • An act that causes someone to apprehend imminent bodily harm (such as brandishing a weapon). 

  • An attempt to commit battery: a violent attempt, or willful effort with force or violence, to do hurt to another, but without necessarily touching the person, such as by raising a fist in a threatening manner, or by striking at the person and missing. 

  • The tort whose action is such an act. 

  • The crime whose action is such an attempt. 

verb
  • To threaten or harass. 

  • To attack, physically or figuratively; to assail. 

guarding

noun
  • Tensing of the muscles, especially of the abdomen, in order to minimise the movement and agitation to the internal inflamed organs. 

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