joyride vs unhappiness

joyride

verb
  • To take a joyride. 

noun
  • A ride in a vehicle taken for enjoyment. 

  • An instance of driving a motor vehicle in a carefree or reckless manner, especially a vehicle which has been taken without the permission of the owner. 

unhappiness

noun
  • The feeling of not being happy 

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