despoil vs overstep the mark

despoil

verb
  • To violently strip (someone), with indirect object of their possessions etc.; to rob. 

  • To plunder; to pillage; take spoil from. 

overstep the mark

verb
  • To behave in an unacceptable or morally reprehensible way. 

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