a posteriori vs a priori

a posteriori

adv
  • In a manner that deduces theories from facts. 

adj
  • Involving induction of theories from facts. 

  • Developed on a basis of languages which already exist. 

a priori

adv
  • In a way based on theoretical deduction rather than empirical observation. 

adj
  • Presumed without analysis. 

  • Self-evident, intuitively obvious. 

  • Based on hypothesis and theory rather than experiment or empirical evidence. 

  • Developed entirely from scratch, without deriving it from existing languages. 

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