covet vs lick one's chops

covet

verb
  • To wish for with eagerness; to desire possession of, often enviously. 

  • To long for inordinately or unlawfully; to hanker after (something forbidden). 

  • To yearn; to have or indulge an inordinate desire, especially for another's possession. 

lick one's chops

verb
  • To anticipate something eagerly. 

  • To use one's tongue to remove moistness from the sides of one's mouth, as when salivating or at the conclusion of a meal. 

  • To look forward avidly to eating something. 

How often have the words covet and lick one's chops occurred in a corpus of books? (source: Google Ngram Viewer )