enigma vs oracle

enigma

noun
  • Mysteriousness; obscurity; lack of clarity. 

  • A species of grasshopper, Oedaleonotus enigma. 

  • A riddle, or a difficult problem. 

  • The Talaud kingfisher, Todiramphus enigma. 

  • A rare species of moth, Heliothis enigma. 

  • A style of literature characterized by obscurity and hints of transcendental meaning. 

  • Something or someone puzzling, mysterious or inexplicable. 

  • A protein with three LIM domains (a conserved cysteine- and histidine-rich structure of two adjacent zinc fingers) at the C terminus that regulates protein phosphorylation. 

  • Riddles and puzzles, collectively. 

oracle

noun
  • A prophetic response, often enigmatic or allegorical, so given. 

  • A wise sentence or decision of great authority. 

  • The sanctuary, or most holy place in the temple; also, the temple itself. 

  • A shrine dedicated to some prophetic deity. 

  • One who communicates a divine command; an angel; a prophet. 

  • A fortune-teller. 

  • A third-party service that provides smart contracts with information from the outside world. 

  • A person considered to be a source of wisdom. 

  • A theoretical entity capable of answering some collection of questions. 

  • A person such as a priest through whom the deity is supposed to respond with prophecy or advice. 

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