cheep vs sibilant

cheep

noun
  • A similar-sounding short high-pitched sound 

  • A short, high-pitched sound made by a small bird. 

verb
  • To express in a chirping tone. 

  • Of a small bird, to make short, high-pitched sounds. 

intj
  • The short, high-pitched sound made by a small bird. 

sibilant

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

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

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