adapter vs fitting

adapter

noun
  • A device or application used to achieve operative compatibility between devices that otherwise are incompatible. 

  • One who adapts a thing, e.g. a play. 

  • Specifically, a device that allows one format of plug to be used with a different format of socket. 

  • Specifically, an AC adapter: a device that reduces voltage and converts AC to DC to allow a battery-powered device to use mains power. 

  • Specifically, a device that permits two, three, or more plugs to be used at a single electrical power point. 

  • One who is capable of adapting to differing situations. 

fitting

noun
  • A small part, especially a standardized or detachable part of a device or machine. 

  • The process of fitting up; especially of applying craft methods such as skilled filing to the making and assembling of machines or other products. 

  • A tube connector; a standardized connecting part of a piping system to attach sections of pipe together, such as a coupling 

  • The act of trying on clothes to inspect or adjust the fit. 

  • The action or condition of having fits in the sense of seizures or convulsions. 

  • A removable item in a house or other building, which can be taken with one when one moves out, such as a moveable piece of furniture, a carpet, picture, etc.; US furnishing; compare fixture. 

adj
  • Ready, appropriate, suitable, or in keeping 

verb
  • Getting ready; preparing. 

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