pathogenic vs pestilential

pathogenic

adj
  • Able to cause (harmful) disease. 

  • Consisting of harsh, percussive, nonverbal sounds. 

pestilential

adj
  • Producing, spreading, promoting or infected with pestilence; causing infection. 

  • Caused by pestilence. 

  • Causing irritation or annoyance. 

  • Spreading in the manner of pestilence. 

  • During which pestilence spreads. 

  • Having a harmful moral effect (especially one that is believed to spread in the manner of pestilence). 

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