flysheet vs spectacular

flysheet

noun
  • A printed leaflet or pamphlet. 

  • An extra cover of a tent to protect against insects and bad weather. 

spectacular

noun
  • A pop-up (folded paper element) in material sent by postal mail. 

  • A spectacular display. 

adj
  • Relating to spectacles, or glasses for the eyes. 

  • Amazing or worthy of special notice. 

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