equivocal vs hieroglyphic

equivocal

adj
  • Having two or more equally applicable meanings; capable of double or multiple interpretation. 

  • Capable of being ascribed to different motives, or of signifying opposite feelings, purposes, or characters; deserving to be suspected. 

  • Uncertain, as an indication or sign. 

noun
  • A word or expression capable of different meanings; an ambiguous term. 

hieroglyphic

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

  • difficult to decipher 

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 

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