contagious vs pestilential

contagious

adj
  • Having a disease that can be transmitted to another person. 

  • Easily transmitted to others. 

  • Easily passed on to others. 

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 contagious and pestilential occurred in a corpus of books? (source: Google Ngram Viewer )