stillness vs tremble

stillness

noun

  • Habitual silence or quiet; taciturnity. 

  • The quality or state of being still. 

tremble

verb

  • To shake, quiver, or vibrate. 

  • To fear; to be afraid. 

noun

  • A shake, quiver, or vibration. 

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