spunk vs stalwartness

spunk

noun
  • Semen. 

  • An attractive person (normally male). 

  • Touchwood; tinder. 

  • Courage; spirit; mettle; determination. 

verb
  • To ejaculate. 

  • To waste (money etc.). 

stalwartness

noun
  • The state or condition of being stalwart. 

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