cask vs holster

cask

verb
  • To put into a cask. 

noun
  • A large barrel for the storage of liquid, especially of alcoholic drinks. 

holster

verb
  • To put something in a holster. 

noun
  • A belt with loops or slots for carrying small tools or other equipment. 

  • A case for carrying a tool, particularly a gun, safely and accessibly. 

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