freight vs freighter

freight

noun
  • The transportation of goods (originally by water; now also (chiefly US) by land); also, the hiring of a vehicle or vessel for such transportation. 

  • Payment for transportation. 

  • Goods or items in transport; cargo, luggage. 

  • A burden, a load. 

  • Cultural or emotional associations. 

verb
  • To load or store (goods, etc.). 

  • To transport (goods). 

  • To carry (something) as if it is a burden or load. 

  • Chiefly followed by up: to carry as part of a cargo. 

  • To load (a vehicle or vessel) with freight (cargo); also, to hire or rent out (a vehicle or vessel) to carry cargo or passengers. 

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 and freighter occurred in a corpus of books? (source: Google Ngram Viewer )