canopy vs shutter

canopy

verb
  • To cover with or as if with a canopy. 

  • To go through the canopy of a forest on a zipline. 

noun
  • A high cover providing shelter, such as a cloth supported above an object, particularly over a bed. 

  • Any overhanging or projecting roof structure, typically over entrances or doors. 

  • The zone of the highest foliage and branches of a forest. 

  • In an airplane, the transparent cockpit cover. 

  • In a parachute, the cloth that fills with air and thus limits the falling speed. 

shutter

verb
  • To close shutters covering. 

  • To close up (a building) for a prolonged period of inoccupancy. 

  • To cancel or terminate. 

noun
  • The part of a camera, normally closed, that opens for a controlled period of time to let light in when taking a picture. 

  • One who shuts or closes something. 

  • Protective panels, usually wooden, placed over windows to block out the light. 

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