probative vs sentimental

probative

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

sentimental

adj
  • Derived from emotion rather than reason; of or caused by sentiment. 

  • Characterized by sentiment, sentimentality or excess emotion. 

  • Romantic. 

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