chalk out vs concoct

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 

concoct

verb
  • To contrive something using skill or ingenuity. 

  • To prepare something by mixing various ingredients, especially to prepare food for cooking. 

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