hieroglyphic vs paperback

hieroglyphic

noun
  • Undecipherable handwriting or secret symbol. 

  • Any symbol used in this system; a hieroglyph. 

  • A writing system of ancient Egypt, Minoans, Maya and other civilizations, using pictorial symbols to represent individual sounds as a rebus 

adj
  • difficult to decipher 

  • of, relating to, or written with this system of symbols 

paperback

noun
  • A book with flexible binding. 

verb
  • To issue or publish (a book) in a paperback edition. 

adj
  • Having flexible binding. 

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