disquiet vs luxury

disquiet

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

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

luxury

noun
  • Very wealthy and comfortable surroundings. 

  • Something desirable but expensive. 

  • Something that is pleasant but not necessary in life. 

adj
  • very expensive 

  • not essential but desirable and enjoyable and indulgent. 

  • Pertaining to the top-end market segment for mass production mass market vehicles, above the premium market segment. 

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