brassy vs sibilant

brassy

adj
  • Harsh in tone. 

  • Unfeeling; pitiless. 

  • Impudent; impudently bold. 

  • Resembling brass. 

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

sibilant

adj
  • Characterized by a hissing or hushing sound such as the s or sh in sack or shack. 

noun
  • A consonant having a hissing or hushing sound such as the s or sh in sack or shack. 

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