prevision vs prognosis

prevision

noun

  • A prediction. 

  • Advance knowledge; foresight. 

verb

  • To predict or envision the future. 

prognosis

noun

  • A forecast of the future course or outcome of a situation based on what is presently known; a prediction. 

  • A forecast of the future course or outcome of a disease or disorder based on current medical knowledge. 

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