freight wagon vs freighter

freight wagon

noun
  • A railroad car used to carry freight 

  • American spelling of freightwagon 

freighter

noun
  • One for whom freight is transported. 

  • One employed in receiving and forwarding freight. 

  • An aircraft used mainly to carry freight; a cargo aircraft or cargo plane. 

  • A vessel used mainly to carry freight; a cargo ship. 

  • One who loads a ship, or one who charters and loads a ship. 

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