chalk out vs sketch out

chalk out

verb
  • to make (plans); to sketch 

  • Of a multi-race wager, to lose to the favorite in all of the remaining races. 

  • To draw or write down using chalk 

sketch out

verb
  • Used other than figuratively or idiomatically: see sketch, out. 

  • To creep out; to give a creepy or sketchy feeling to. 

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