flagship vs pinnacle

flagship

verb
  • To act as a flagship for. 

noun
  • The most important one out of a related group. 

  • The ship occupied by the fleet's commander (usually an admiral); it denotes this by flying his flag. 

  • The ship regarded as most important out of a group, e.g. a nation's navy or company's fleet. 

pinnacle

verb
  • To place on a pinnacle. 

  • To build or furnish with a pinnacle or pinnacles. 

noun
  • 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. 

  • The highest point. 

  • Coordinate term: sea stack 

  • A tall, sharp and craggy rock or mountain. 

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

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