predictive vs sibylline

predictive

adj
  • Useful in predicting. 

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

  • Describing a predictor. 

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. 

sibylline

adj
  • Having oracle-like predicting powers, clairvoyant. 

  • Occult, mysterious. 

  • Of or pertaining to or resembling a sibyl or female oracle, especially the Cumaean Sibyl and the Sibylline Books. 

  • Excessively and exorbitantly expensive. (In allusion to the Sibyl who sold three books to Tarquinius Superbus at the price of the original nine.) 

noun
  • One of the Sibylline Oracles or Sibylline Books. 

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