predictive vs revelatory

predictive

noun
  • A conditional statement that includes a prediction in the dependent clause (e.g. "if it rains, the game will be cancelled", "give her an inch and she'll take a mile."). 

  • Simulated data generated from a statistical model, based on the estimates for the real data. 

adj
  • Expressing the expected accuracy of a statistical measure or of a diagnostic test. 

  • Useful in predicting. 

  • Describing a predictor. 

revelatory

adj
  • Prophetic (especially of doom); apocalyptic 

  • Of, pertaining to, or in the nature of a revelation 

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