canopy vs coverlid

canopy

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. 

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

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

coverlid

noun
  • A coverlet. 

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