flask vs rummer

flask

noun
  • A container used to discreetly carry a small amount of a hard alcoholic beverage; a pocket flask. 

  • Laboratory glassware used to hold larger volumes than test tubes, normally having a narrow mouth of a standard size which widens to a flat or spherical base. 

  • A container for holding a casting mold, especially for sand casting molds. 

  • A narrow-necked vessel of metal or glass, used for various purposes; as of sheet metal, to carry gunpowder in; or of wrought iron, to contain quicksilver; or of glass, to heat water in, etc. 

  • A bed in a gun carriage. 

verb
  • To invest a denture in a flask so as to produce a sectional mold. 

rummer

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

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