obnoxious vs sibilant

obnoxious

adj
  • Extremely offensive or unpleasant; very annoying, contemptible, or odious. 

  • Exposed or vulnerable to something, especially harm or injury. 

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