hustler vs rounder

hustler

noun
  • A charlatan, huckster, grifter, swindler, a scoundrel. 

  • A pimp. 

  • Somebody who pretends to be an amateur at a game in order to win bets. 

  • A male prostitute who sells his services to men. 

  • One who rushes or hurries; an energetic person. 

  • A prostitute. 

rounder

noun
  • A person who makes the rounds of bars, saloons, and similar establishments; figuratively, a debaucher or roué 

  • A railroad man who worked at a roundhouse, operating the turntable. 

  • A fight lasting a specified number of rounds. 

  • A Methodist preacher traveling a circuit, also referred to as a circuit rider. 

  • A tool for making an edge or surface round. 

  • A person who earns a living by playing cards 

  • One who rounds; one who comes about frequently or regularly. 

  • A sports league draft selection in a specified round or the player drafted with that selection. 

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