continuant vs undying

continuant

adj
  • Continuing; prolonged; sustained. 

noun
  • An endurant. 

  • A determinant formed from a tridiagonal matrix. 

  • A linguistic sound other than a stop. 

undying

adj
  • permanent; never-ending; infinite 

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