sibilant vs sparkly

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. 

sparkly

adj
  • bubbly or effervescent 

  • lively and high-spirited 

  • giving off sparks, or small flashes of light; glittery 

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