harness vs tether

harness

noun
  • A restraint or support, especially one consisting of a loop or network of rope or straps. 

  • The part of a loom comprising the heddles, with their means of support and motion, by which the threads of the warp are alternately raised and depressed for the passage of the shuttle. 

  • A collection of wires or cables bundled and routed according to their function. 

  • Equipment for any kind of labour. 

verb
  • To equip with armour. 

  • To place a harness on something; to tie up or restrain. 

  • To capture, control or put to use. 

tether

noun
  • a rope, cable etc. that holds something in place whilst allowing some movement 

  • a strong rope or line that connects a sailor's safety harness to the boat's jackstay 

  • the limit of one's abilities, resources etc. 

  • The cardinal number three in an old counting system used in Teesdale and Swaledale. (Variant of tethera) 

verb
  • to connect something to something else. 

  • to connect a cellular smartphone to another personal computer in order to give it access to a hotspot. 

  • to restrict something with a tether. 

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