cloven vs fractional

cloven

adj
  • Split, sundered, or divided. 

fractional

adj
  • Divided; fragmentary; incomplete. 

  • Relating to a process or product of fractional distillation. 

  • Pertaining to a fraction. 

  • Very small; minute. 

noun
  • An expression of a fractional number. 

  • Relating to a fraction in a material distillation or separation process. 

  • Partial ownership of a property, such as real estate or a chartered airplane, such that each partial owner has use of the property for only a portion of the time. 

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