disquiet vs unease

disquiet

verb
  • To make (someone or something) worried or anxious. 

noun
  • Lack of quiet; absence of tranquility in body or mind 

unease

verb
  • To make uneasy or uncomfortable 

noun
  • Trouble; misery; a feeling of disquiet or concern. 

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