deafening vs sibilant

deafening

adj
  • Very loud. 

  • Loud enough to cause temporary or permanent hearing loss. 

noun
  • pugging 

  • The process by which something is deafened. 

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 deafening and sibilant occurred in a corpus of books? (source: Google Ngram Viewer )