spunk vs weakness

spunk

noun
  • Semen. 

  • An attractive person (normally male). 

  • Touchwood; tinder. 

  • Courage; spirit; mettle; determination. 

verb
  • To ejaculate. 

  • To waste (money etc.). 

weakness

noun
  • A special fondness or desire. 

  • An inadequate quality; fault 

  • The condition of being weak. 

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