sibilant vs whizzing

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. 

whizzing

adj
  • Producing a whizz; giving off a whizzing noise. 

  • Spinning rapidly. 

noun
  • The sound or action of something that whizzes. 

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