subduction vs transit

subduction

noun
  • The action of being pushed or drawn beneath another object. 

  • The process of one tectonic plate moving beneath another and sinking into the mantle at a convergent plate boundary. 

  • Arithmetical subtraction. 

  • A surjection between diffeological spaces such that the target is identified as the pushforward of the source. 

  • The act of subducting or taking away. 

transit

noun
  • The act of passing over, across, or through something. 

  • An imaginary line between two objects whose positions are known. When the navigator sees one object directly in front of the other, the navigator knows that his position is on the transit. 

  • The passage of a celestial body across the observer's meridian, or across the disk of a larger celestial body. 

  • A Ford Transit van, see Transit. 

  • Public transport system. 

  • A surveying instrument rather like a theodolite that measures horizontal and vertical angles. 

  • The conveyance of people or goods from one place to another, especially on a public transportation system; the vehicles used for such conveyance. 

verb
  • To pass over, across or through something. 

  • To carry communications traffic to and from a customer or another network on a compensation basis as opposed to peerage in which the traffic to and from another network is carried on an equivalency basis or without charge. 

  • To revolve an instrument about its horizontal axis so as to reverse its direction. 

  • To convey people or goods from one place to another, especially by public transport vehicles. 

  • To make a transit. 

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