convulsive vs jarring

convulsive

adj
  • Marked by or having the nature of convulsions. 

  • Having or producing convulsions. 

jarring

adj
  • That jars (clashes or disagrees); incongruous, conflictful. 

noun
  • Storage in jars. 

  • A feeling or movement that jars or jolts. 

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