mind-altering vs shocking

mind-altering

adj

  • Altering the way someone's mind works. 

shocking

adj

  • Inspiring shock; startling. 

  • Unusually obscene or lewd. 

  • Extremely bad. 

noun

  • The application of an electric shock. 

How often have the words mind-altering and shocking occurred in a corpus of books? (source: Google Ngram Viewer )