ascendancy vs pinnacle

ascendancy

noun
  • Supremacy; dominant control; the quality of being in the ascendant. 

  • A class of Protestant landowners and professionals that dominated political and social life in Ireland up to the early 20th century 

  • A quantitative attribute of an ecosystem, defined as a function of the ecosystem's trophic network, and intended to indicate its ability to prevail against disturbance by virtue of its combined organization and size. 

pinnacle

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

  • 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. 

verb
  • To place on a pinnacle. 

  • To build or furnish with a pinnacle or pinnacles. 

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