free rider vs mooch

free rider

noun
  • Someone who obtains goods or services legally without paying. 

  • A worker at an open shop who is able to enjoy the benefits negotiated by a union without being a member of the union. 

  • One who obtains benefit from a public good without paying for it directly. 

mooch

noun
  • An aimless stroll. 

  • One who mooches; a moocher. 

  • A unit of time comprising ten days, used to measure how long someone holds a job. 

verb
  • To wander around aimlessly, often causing irritation to others. 

  • To steal or filch. 

  • To beg, cadge, or sponge; to exploit or take advantage of others for personal gain. 

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