continuant vs unbroken

continuant

adj
  • Continuing; prolonged; sustained. 

noun
  • An endurant. 

  • A determinant formed from a tridiagonal matrix. 

  • A linguistic sound other than a stop. 

unbroken

adj
  • Continuous, without interruption. 

  • Whole, not divided into parts. 

  • Of a horse, not tamed. 

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