shaking like a leaf vs shaky

shaking like a leaf

shaky

adj

  • Easily shaken; tottering; unsound. 

  • Shaking or trembling. 

  • Wavering; undecided. 

  • Full of shakes or cracks; cracked. 

  • Nervous, anxious. 

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