harness vs oil rig

harness

noun
  • Equipment for any kind of labour. 

  • 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. 

verb
  • To equip with armour. 

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

  • To capture, control or put to use. 

oil rig

noun
  • A rig, consisting of platform and machinery, used to drill for oil and other petroleum products like natural gas. 

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