predictive vs prognostic

predictive

adj
  • Describing a predictor. 

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

  • Useful in predicting. 

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. 

prognostic

adj
  • Of, pertaining to or characterized by prognosis or prediction. 

noun
  • prognosis 

  • One who predicts the future. 

  • A sign by which a future event may be known or foretold. 

  • A prediction of the future. 

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