power car vs rigger

power car

noun
  • A vehicle equipped with machinery for supplying heat or electrical power to other parts of a train. 

  • A vehicle that propels, and commonly also controls, a passenger train or tram, often as the lead vehicle. 

  • Antonym: trailer car 

rigger

noun
  • A cylindrical pulley or drum in machinery. 

  • One whose occupation is to lift and move large and heavy objects (such as industrial machinery) with the help of cables, hoists, and other equipment. 

  • One who rigs or manipulates (an election, etc). 

  • A person who applies functional or artistic rope bondage to another person's body. 

  • One whose occupation is to fit the rigging of a ship or of a counterweight system. 

  • One whose occupation is to outfit a computer model with controls for animation. 

  • A plastic bottle of beer, typically between 1 L to 2.5 L volume. 

  • A part of a rowing boat's equipment used to provide leverage for a rowing blade or oar around a fixed fulcrum. 

  • A long, slender, pointed sable paintbrush for making fine lines, etc.; said to be so called from its use for drawing the lines of the rigging of ships. 

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