catching vs pathogenic

catching

adj

  • Infectious, contagious. 

  • Captivating; alluring; catchy. 

noun

  • The action of the verb catch. 

pathogenic

adj

  • Able to cause (harmful) disease. 

  • Consisting of harsh, percussive, nonverbal sounds. 

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