steadiness vs tremble

steadiness

noun

  • the state of being steady 

  • the degree of stability 

tremble

verb

  • To shake, quiver, or vibrate. 

  • To fear; to be afraid. 

noun

  • A shake, quiver, or vibration. 

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