moor vs tether

moor

verb
  • To fix or secure (e.g. a vessel) in a particular place by casting anchor, or by fastening with ropes, cables or chains or the like. 

  • To secure or fix firmly. 

  • To cast anchor or become fastened. 

noun
  • An extensive waste covered with patches of heath, and having a poor, light soil, but sometimes marshy, and abounding in peat; a heath 

  • A game preserve consisting of moorland. 

tether

verb
  • to restrict something with a tether. 

  • to connect something to something else. 

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

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

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

  • 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) 

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