gnarly vs risky

gnarly

adj
  • Dangerous; difficult. 

  • Unpleasant, awful, ugly. 

  • Excellent; attractive. 

  • Of music or a sound: harsh. 

  • Having or characterized by gnarls; gnarled. 

risky

adj
  • Dangerous, involving risks. 

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