air cushion vs range hood

air cushion

noun
  • A shock absorber that uses an air chamber. 

  • A layer of trapped air that supports a hovercraft. 

  • A rubber or plastic inflatable cushion. 

range hood

noun
  • An electrical kitchen device fitted over a cooker and connected to a flue designed to suck off any vapours from cooking. 

How often have the words air cushion and range hood occurred in a corpus of books? (source: Google Ngram Viewer )