convulsion vs tumult

convulsion

noun
  • Violent turmoil. 

  • An uncontrolled fit, as of laughter; a paroxysm. 

  • An intense, paroxysmal, involuntary muscular contraction. 

tumult

noun
  • A riot or uprising. 

  • Violent commotion or agitation, often with confusion of sounds. 

  • Confused, agitated noise as made by a crowd. 

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