perfective aspect vs preterite

perfective aspect

noun
  • A feature of the verb which denotes viewing the event the verb describes as a completed whole, rather than from within the event as it unfolds. For example, "she sat down" as opposed to "she was sitting down". Since the focus is on the completion of what is expressed by the verb, this aspect is generally associated with the past and future tenses. This term is often used interchangeably with aorist aspect. This is not to be confused with the perfect tense. 

preterite

noun
  • A grammatical tense or verb form serving to denote events that took place or were completed in the past. 

adj
  • Belonging wholly to the past; passed by. 

  • showing an action at a determined moment in the past. 

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