vacuum tube vs window

vacuum tube

noun
  • A type of electron tube that controls electron current through vacuum between electrodes within a sealed container, usually of glass or metal and often designed to be easily installed in and removed from the equipment in which it is used. 

window

noun
  • An opening, usually covered by one or more panes of clear glass, to allow light and air from outside to enter a building or vehicle. 

  • Something that allows one to see through or into something 

  • A rectangular area on a computer terminal or screen containing some kind of user interface, displaying the output of and allowing input for one of a number of simultaneously running computer processes. 

  • A function multiplied with a signal to reduce spectral leakage when performing a Fourier transform. 

  • An opening, usually covered by glass, in a shop which allows people to view the shop and its products from outside; a shop window. 

  • A figure formed of lines crossing each other. 

  • The time between first infection and detectability. 

  • A restricted range. 

  • The shutter, casement, sash with its fittings, or other framework, which closes a window opening. 

  • A period of time when something is available or possible; a limited opportunity. 

  • Synonym of chaff (“strips of material intended to confuse radar”) 

verb
  • To furnish with windows. 

  • To place at or in a window. 

  • To apply a window function to (a signal). 

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