epistrophe vs symploce

epistrophe

noun
  • The repetition of the same word or words at the end of successive phrases, clauses or sentences. 

symploce

noun
  • The repetition of one word or phrase at the beginning and another word or phrase at the end of successive phrases or clauses. 

  • Hypernyms: epanaphora, antistrophe 

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