continuant vs steadfast

continuant

adj
  • Continuing; prolonged; sustained. 

noun
  • An endurant. 

  • A determinant formed from a tridiagonal matrix. 

  • A linguistic sound other than a stop. 

steadfast

adj
  • Fixed or unchanging; steady. 

  • Firmly loyal or constant; unswerving. 

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