behead vs lacerate

behead

verb
  • To deliberately remove the head of; to cut off (someone's) head. 

lacerate

verb
  • To tear, rip or wound. 

  • To defeat thoroughly; to thrash. 

adj
  • Jagged, as if torn or lacerated. 

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