feeder vs fireman

feeder

noun
  • One who, or that which, feeds material into something (especially a machine). 

  • One who feeds, or gives food to another. 

  • A tributary stream, especially of a canal. 

  • A transmission line that feeds the electricity for an electricity substation, or for a transmitter. 

  • A judge whose law clerks are often selected to become clerks for the Supreme Court. 

  • A feeder ship. 

  • The participant in feederism who feeds the other (the feedee). 

  • A player whose character is killed by the opposing player or team more than once, deliberately or through lack of skills and experience, thus helping the opposing side. 

  • A branch line of a railway. 

  • That which is used to feed. 

  • One who feeds, or takes in food. 

fireman

noun
  • Someone (especially one who is male) who is skilled in the work of fighting fire. 

  • A safety inspector in coal mines. 

  • An assistant on any locomotive, whether steam-powered or not. 

  • A relief pitcher (reflecting the figurative analogy of rescuing the situation). 

  • A person (originally a man) who keeps the fire going underneath a steam boiler (originally, shoveling coal by hand), particularly on a railroad locomotive or steamship. 

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