emblem vs hieroglyphic

emblem

noun
  • A representative symbol, such as a trademark or logo. 

  • A picture accompanied with a motto, a set of verses, etc. intended as a moral lesson or meditation. 

  • Inlay; inlaid or mosaic work; something ornamental inserted in a surface. 

  • Something that represents a larger whole. 

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 

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