rowdy vs sibilant

rowdy

adj
  • Loud and disorderly; riotous; boisterous. 

noun
  • money; ready money. 

  • A boisterous person; a brawler. 

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