pickpocket vs walk away with

pickpocket

verb
  • To pick pockets; to steal. 

noun
  • One who steals from the pocket of a passerby, usually by sleight of hand. 

walk away with

verb
  • To steal (something) or to come to possess something that was contested; to walk off with. 

  • To win (a competition or contest) handily or by a large margin. 

How often have the words pickpocket and walk away with occurred in a corpus of books? (source: Google Ngram Viewer )