brassy vs unwilling

brassy

noun
  • Kyphosus vaigiensis, a fish found in southeast Asia. 

adj
  • Unfeeling; pitiless. 

  • Impudent; impudently bold. 

  • Harsh in tone. 

  • Resembling brass. 

unwilling

adj
  • Not willing; reluctant 

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