fervent vs probative

fervent

adj
  • Exhibiting particular enthusiasm, zeal, conviction, persistence, or belief. 

  • Having or showing emotional warmth, fervor, or passion. 

  • Glowing, burning, very hot. 

probative

adj
  • Tending to prove a particular proposition or to persuade someone of the truth of an allegation. 

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