expression vs hieroglyphic

expression

noun
  • An arrangement of symbols denoting values, operations performed on them, and grouping symbols. 

  • A specific blend of whisky. 

  • A colloquialism or idiom. 

  • The action of expressing thoughts, ideas, feelings, etc. 

  • The process of translating a gene into a protein. 

  • A facial appearance usually associated with an emotion. 

  • (manufacturing) The act of pressing or squeezing out. 

  • A particular way of phrasing an idea. 

  • A piece of code in a high-level language that returns a value. 

  • The tone of voice or sound in music. 

  • emotional involvement or engagement in a text read aloud rendered by the voice of the reciter or the reader 

hieroglyphic

noun
  • Any symbol used in this system; a hieroglyph. 

  • Undecipherable handwriting or secret symbol. 

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