berg vs summit

berg

noun

  • mountain 

  • An iceberg. 

summit

noun

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

  • A gathering or assembly of leaders. 

pron

  • Something 

verb

  • To reach the summit of a mountain. 

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