augur vs prophetess

augur

noun
  • An official who interpreted omens before the start of public events. 

  • A diviner who foretells events by the behaviour of birds or other animals, or by signs derived from celestial phenomena, or unusual occurrences. 

verb
  • To foretell events; to exhibit signs of future events; to indicate a favorable or an unfavorable outcome. 

prophetess

noun
  • A female prophet. 

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