continuant vs tenable

continuant

adj
  • Continuing; prolonged; sustained. 

noun
  • An endurant. 

  • A determinant formed from a tridiagonal matrix. 

  • A linguistic sound other than a stop. 

tenable

adj
  • capable of being maintained or justified; well-founded 

  • Fit for habitation, similar, or related use. 

  • Capable of being defended against assault or attack; defensible 

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