past historic tense vs past simple

past historic tense

noun
  • A tense used in some languages (such as French and Italian) in narrative, and in spoken language primarily when reading narrative or in storytelling, for completed actions in the past or in speaking of the dead. It is semantically the same as the simple past in many languages, including English. 

past simple

noun
  • simple past 

How often have the words past historic tense and past simple occurred in a corpus of books? (source: Google Ngram Viewer )