diary vs hieroglyphic

diary

noun
  • A daily log of experiences, especially those of the writer. 

  • A personal organizer or appointment diary. 

verb
  • To keep a diary or journal. 

hieroglyphic

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

  • Undecipherable handwriting or secret symbol. 

  • Any symbol used in this system; a hieroglyph. 

adj
  • difficult to decipher 

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

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