squiggle vs tremble

squiggle

noun
  • A short twisting or wiggling line or mark. 

  • Synonym of tilde. 

  • An illegible scrawl. 

verb
  • To write illegibly. 

  • To make a squiggle. 

  • To wriggle or squirm. 

tremble

noun
  • A shake, quiver, or vibration. 

verb
  • To shake, quiver, or vibrate. 

  • To fear; to be afraid. 

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