a priori vs univocal

a priori

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. 

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

univocal

adj
  • Unequivocal; indubitable. 

  • Containing instances of only one vowel; univocalic. 

  • Having unison of sound, as the octave has in music. 

  • Having only one possible meaning. 

  • Having always the same drift or tenor; uniform; certain; regular. 

noun
  • A document containing instances of only one vowel. 

  • A word having only one meaning. 

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