turmoil vs unrest

turmoil

noun
  • A state of great disorder or uncertainty. 

  • Harassing labour; trouble; disturbance. 

unrest

noun
  • A state of trouble, confusion and turbulence, especially in a political context; a time of riots, demonstrations and protests. 

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