free rider vs waster

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. 

waster

noun
  • Someone or something that wastes; someone who squanders or spends extravagantly. 

  • A destroyer. 

  • An item that is spoiled during its manufacture. 

  • An imperfection in the wick of a candle, causing it to waste. 

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