recumbent vs unbroken

recumbent

adj
  • Inactive; idle. 

  • Lying down. 

noun
  • A bicycle or tricycle that places the rider in a reclined posture. 

unbroken

adj
  • Continuous, without interruption. 

  • Whole, not divided into parts. 

  • Of a horse, not tamed. 

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