centrifugal vs off-centre

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. 

off-centre

adj
  • (of an axis etc) displaced from the centre 

  • eccentric, unbalanced 

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