allegory vs antistrophe

allegory

noun
  • A picture, book, or other form of communication using such representation. 

  • A symbolic representation which can be interpreted to reveal a hidden meaning, usually a moral or political one. 

  • A narrative in which a character, place, or event is used to deliver a broader message about real-world issues and occurrences. 

  • A category that retains some of the structure of the category of binary relations between sets, representing a high-level generalisation of that category. 

antistrophe

noun
  • The repetition of words in an inverse order. 

  • The lines of this part of the choral song. 

  • The repetition of a word or phrase at the end of successive clauses 

  • In Greek choruses and dances, the returning of the chorus, exactly answering to a previous strophe or movement from right to left. 

  • The retort or turning of an adversary's plea against him. 

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