quarterdeck vs summit

quarterdeck

noun
  • The aft part of the upper deck of a ship; normally reserved for officers 

summit

noun
  • A gathering or assembly of leaders. 

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

pron
  • Something 

verb
  • To reach the summit of a mountain. 

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