infallible vs pure

infallible

adj
  • Without fault or weakness; incapable of error or fallacy. 

  • Certain to produce the intended effect, sure. 

noun
  • A person who, or an object or process that, is taken as being infallible. 

pure

adj
  • Free of flaws or imperfections; unsullied. 

  • Of a single, simple sound or tone; said of some vowels and the unaspirated consonants. 

  • Free of foreign material or pollutants. 

  • Done for its own sake instead of serving another branch of science. 

  • Mere; that and that only. 

  • Without harmonics or overtones; not harsh or discordant. 

  • A lot of. 

  • Free of immoral behavior or qualities; clean. 

noun
  • One who, or that which, is pure. 

adv
  • to a great extent or degree; extremely; exceedingly. 

verb
  • to hit (the ball) completely cleanly and accurately 

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