bare-knuckle boxing vs fistfight

bare-knuckle boxing

noun

  • The original form of boxing, in which no gloves were worn. 

fistfight

noun

  • A fight using bare fists. 

verb

  • To fight using bare fists. 

How often have the words bare-knuckle boxing and fistfight occurred in a corpus of books? (source: Google Ngram Viewer )