convulsive vs shaky

convulsive

adj
  • Having or producing convulsions. 

  • Marked by or having the nature of convulsions. 

shaky

adj
  • Shaking or trembling. 

  • Easily shaken; tottering; unsound. 

  • Wavering; undecided. 

  • Full of shakes or cracks; cracked. 

  • Nervous, anxious. 

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