lick one's chops vs wait for

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. 

wait for

verb
  • To await the arrival of. 

  • To wait until the specified event occurs. 

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