dyspeptic vs sibilant

dyspeptic

noun
  • A dyspeptic person. 

adj
  • Of, relating to, or having dyspepsia or indigestion. 

  • Irritable or morose. 

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