centrifugal vs perverse

centrifugal

adj
  • Tending, or causing, to recede from the center. 

  • Expanding first at the summit, and later at the base, as a flower cluster. 

  • Having the radicle turned toward the sides of the fruit, as some embryos. 

noun
  • A rotating machine used to separate massecuite into sugar crystals and molasses. 

perverse

adj
  • Turned aside while against something, splitting off from a thing. 

  • Morally wrong or evil; wicked; perverted. 

  • Obstinately in the wrong; stubborn; intractable. 

  • Ignoring the evidence or the judge's opinions. 

  • Wayward; vexing; contrary. 

verb
  • To pervert. 

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