generator vs wall wart

generator

noun
  • Especially, a machine that converts mechanical energy into electrical energy. 

  • An apparatus in which vapour or gas is formed from a liquid or solid by means of heat or chemical process, as a steam boiler, gas retort etc. 

  • One of the lines of a ruled surface; more generally, an element of some family of linear spaces. 

  • A subordinate piece of code which, given some initial parameters, will generate multiple output values on request. 

  • A piece of apparatus, equipment, etc, to convert or change energy from one form to another. 

  • The principal sound or sounds by which others are produced; the fundamental note or root of the common chord; -- see also generating tone. 

  • An element of a group that is used in the presentation of the group: one of the elements from which the others can be inferred with the given relators. 

wall wart

noun
  • a power supply which plugs directly to the mains socket, without an intervening cord, and via a cord connects to power the device it is used for 

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