commentary vs hieroglyphic

commentary

noun
  • A brief account of transactions or events written hastily, as if for a memorandum. 

  • A series of comments or annotations; especially, a book of explanations or expositions on the whole or a part of some other work. 

  • An oral relation of an event, especially broadcast by television or radio, as it occurs. 

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 commentary and hieroglyphic occurred in a corpus of books? (source: Google Ngram Viewer )