hobby vs moonlight

hobby

noun
  • An activity that one enjoys doing in one's spare time. 

  • Any of four species of small falcons in the genus Falco, especially Falco subbuteo. 

  • An extinct breed of horse native to the British Isles, also known as the Irish Hobby 

moonlight

verb
  • To engage in an activity other than what one is known for. 

  • To work on the side (at a secondary job), often in the evening or during the night. 

  • To perform a secondary function substantially different from its supposed primary function, as in protein moonlighting. 

noun
  • The light reflected from the Moon. 

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