pinnacle vs summit

pinnacle

noun
  • The highest point. 

  • An upright member, generally ending in a small spire, used to finish a buttress, to constitute a part in a proportion, as where pinnacles flank a gable or spire. 

  • Coordinate term: sea stack 

  • A tall, sharp and craggy rock or mountain. 

  • An all-time high; a point of greatest achievement or success. 

verb
  • To place on a pinnacle. 

  • To build or furnish with a pinnacle or pinnacles. 

summit

noun
  • A peak; the topmost point or surface, as of a mountain. 

  • A gathering or assembly of leaders. 

verb
  • To reach the summit of a mountain. 

pron
  • Something 

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