pathogenic vs pestiferous

pathogenic

adj
  • Able to cause (harmful) disease. 

  • Consisting of harsh, percussive, nonverbal sounds. 

pestiferous

adj
  • containing organisms that cause contagious diseases 

  • annoying, vexatious 

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