depot vs supply depot

depot

noun
  • A place for the storage, servicing or upgrade of military hardware. 

  • A bus station or railway station. 

  • A place where recruits are assembled before being sent to active units. 

  • A storage facility, in particular, a warehouse. 

  • A storage space for public transport and other vehicles where they can be maintained and from which they are dispatched for service 

  • The portion of a regiment that remains at home when the rest go on foreign service. 

  • The tableau; the area where cards can be arranged in solitaire or patience games. 

supply depot

noun
  • A facility utilized by armies to store battlefield supplies temporarily on or near the front lines until they can be distributed to army units. 

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