centrifugal vs heteroclite

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. 

heteroclite

adj
  • Being irregularly declined or inflected. 

  • Deviating from the ordinary rule; eccentric, abnormal. 

noun
  • An irregularly declined or inflected word 

  • A person who is unconventional; a maverick 

  • A word whose etymological roots come from distinct, different languages or language groups. 

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