rook vs rounder

rook

noun
  • A trick-taking game, usually played with a specialized deck of cards. 

  • A cheat or swindler; someone who betrays. 

  • mist; fog; roke 

  • A castle or other fortification. 

  • A European bird, Corvus frugilegus, of the crow family. 

  • A rookie. 

  • A piece shaped like a castle tower, that can be moved only up, down, left or right (but not diagonally) or in castling. 

  • A type of firecracker used by farmers to scare birds of the same name. 

  • A bad deal; a rip-off. 

verb
  • To cheat or swindle. 

rounder

noun
  • A person who earns a living by playing cards 

  • 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. 

  • 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 rook and rounder occurred in a corpus of books? (source: Google Ngram Viewer )