perfective aspect vs superlative

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. 

superlative

noun
  • An adjective used to praise something exceptional. 

  • The extreme (e.g. highest, lowest, deepest, farthest, etc) extent or degree of something. 

  • The form of an adjective that expresses which of several items has the highest degree of the quality expressed by the adjective; in English, formed by appending "-est" to the end of the adjective (for some short adjectives only) or putting "most" before it. 

adj
  • Exceptionally good; of the highest quality; superb. 

  • Of or relating to a superlative. 

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