moonlighter vs robber

moonlighter

noun
  • A moonshiner, who makes illicit alcohol. 

  • A southern Australian marine fish, Tilodon sexfasciatum. 

  • A person who moonlights, or works a second job on the side. 

  • One who serenades by moonlight. 

  • One of a gang who used violence, especially at night, to promote agrarianism in Ireland during the Land War of the late 19th century. 

robber

noun
  • A person who robs. 

  • An animal who robs. 

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