intrepid vs submissive

intrepid

adj

  • Fearless; bold; brave. 

submissive

noun

  • One who submits. 

  • One who submits to a dominant partner in BDSM practices. 

adj

  • Meekly obedient or passive. 

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