repository vs safety-deposit box

repository

noun
  • a storage location for files, such as downloadable software packages, or files in a source control system. 

  • A person to whom a secret is entrusted. 

  • A burial vault. 

safety-deposit box

noun
  • A safe-deposit box. 

How often have the words repository and safety-deposit box occurred in a corpus of books? (source: Google Ngram Viewer )