flagellum vs rawhide

flagellum

noun
  • A whip 

  • In protists, a long, whiplike membrane-enclosed organelle used for locomotion or feeding. 

  • In bacteria, a long, whiplike proteinaceous appendage, used for locomotion. 

rawhide

noun
  • A whip made from twisted untanned leather. 

  • Untanned hide. 

verb
  • To clear (a pump) of sediment by starting and stopping it repeatedly. 

  • To beat with a rawhide whip. 

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