sibilant vs thorny

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. 

thorny

adj
  • Aloof and irritable 

  • Having thorns or spines 

  • Troublesome or vexatious 

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