stormy vs unthreatening

stormy

adj
  • Characterized by, or proceeding from, a storm; subject to storms; agitated with strong winds and heavy rain. 

  • Of or pertaining to storms. 

  • Violent; passionate; rough. 

  • Proceeding from violent agitation or fury. 

unthreatening

adj
  • Not threatening 

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