freight vs taskmaster

freight

noun
  • A burden, a load. 

  • Payment for transportation. 

  • Goods or items in transport; cargo, luggage. 

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

  • 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. 

taskmaster

noun
  • A source of hard work or responsibility. 

  • Someone who supervises workers, especially one who imposes hard or burdensome work. 

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