lionhearted vs spunky

lionhearted

adj

  • Brave, courageous. 

spunky

adj

  • Spirited or plucky. 

  • Pertaining to or like spunk (semen). 

  • Stained with semen. 

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