highball vs rummer

highball

noun
  • A cocktail made from a spirit plus soda water etc. 

  • An all clear or full speed ahead signal. 

  • A very high bouldering problem, often with a hard landing. 

verb
  • To make an estimate which tends toward exaggeration. 

rummer

noun
  • A large drinking-glass for alcoholic drinks, typically with a short or heavy stem. 

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