duffel bag vs holster

duffel bag

noun
  • A large, cylindrical, duffel cloth bag used to carry personal gear, especially by soldiers. 

  • A smaller, cylindrical, cloth bag fashionable in the 1950s and 1960s. 

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. 

verb
  • To put something in a holster. 

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