racketeer vs yakuza

racketeer

noun
  • one who commits crimes (especially fraud, bribery, loansharking, extortion etc.) to aid in running a shady or illegal business. 

  • one who instigates or has involvement with a racket. 

verb
  • to commit crimes systematically as part of a criminal organization. 

  • to carry out illegal business activities or criminal schemes. 

yakuza

noun
  • A member of a Japanese organized crime gang. (plural: yakuzas) 

  • A Japanese organized crime gang. (plural: yakuza) 

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