drool vs tip one's hand

drool

verb
  • To secrete any substance in a similar way. 

  • To talk nonsense; drivel. 

  • To secrete saliva, especially in anticipation of food. 

  • To react to something with uncontrollable desire. 

noun
  • Stupid talk. 

  • Saliva trickling from the mouth. 

tip one's hand

verb
  • To inadvertently reveal any secret, particularly a secret that puts one at an advantage or disadvantage. 

  • In card playing, to accidentally reveal one's cards or hand. 

How often have the words drool and tip one's hand occurred in a corpus of books? (source: Google Ngram Viewer )