impure vs nidorous

impure

adj
  • Unchaste; obscene (not according to or not abiding by some system of sexual morality) 

  • Containing undesired intermixtures 

  • Unhallowed; defiled by something unholy, either physically by an objectionable substance, or morally by guilt or sin 

nidorous

adj
  • Emitting a strong, unpleasant odor, especially one like that of cooking fat or similar greasy substances. 

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