impale vs sink into

impale

verb
  • To pierce with a pale; to put to death by fixing on a sharp stake. 

  • To pierce (something) with any long, pointed object. 

  • To place two coats of arms side by side on the same shield (often those of two spouses upon marriage). 

  • To enclose or fence with stakes. 

sink into

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