burden vs trial

burden

noun
  • The tops or heads of stream-work which lie over the stream of tin. 

  • A phrase or theme that recurs at the end of each verse in a folk song or ballad. 

  • The proportion of ore and flux to fuel, in the charge of a blast furnace. 

  • The capacity of a vessel, or the weight of cargo that she will carry. 

  • A responsibility, onus. 

  • A fixed quantity of certain commodities. 

  • Theme, core idea. 

  • The drone of a bagpipe. 

  • A cause of worry; that which is grievous, wearisome, or oppressive. 

  • The total amount of toxins, parasites, cancer cells, plaque or similar present in an organism. 

  • A heavy load. 

verb
  • To impose, as a load or burden; to lay or place as a burden (something heavy or objectionable). 

  • To encumber with a literal or figurative burden. 

trial

noun
  • A piece of ware used to test the heat of a kiln. 

  • Appearance at judicial court in order to be examined. 

  • A difficult or annoying experience, (especially religion) such an experience seen as a test of faith and piety 

  • A clinical trial, a research study. 

  • The trial number. 

  • An opportunity to test something out; a test. 

  • A tryout to pick members of a team. 

  • An internal examination set by Eton College. 

adj
  • Attempted on a provisional or experimental basis. 

  • Pertaining to a language form referring to three of something, like people. (See Ambai language for an example.) 

  • Pertaining to a trial or test. 

  • Characterized by having three (usually equivalent) components. 

  • Triple. 

verb
  • To carry out a series of tests on (a new product, procedure etc.) before marketing or implementing it. 

  • To try out (a new player) in a sports team. 

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