continuant vs long-drawn-out

continuant

adj
  • Continuing; prolonged; sustained. 

noun
  • An endurant. 

  • A determinant formed from a tridiagonal matrix. 

  • A linguistic sound other than a stop. 

long-drawn-out

adj
  • Protracted, extending for a great period of time. 

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