conservancy vs storage device

conservancy

noun
  • The conservation of a resource. 

  • A commission that deals with fishery and navigation. 

  • A state in which a company is allowed to continue trading without incurring any new financial liabilities or disposing of any assets. 

  • An organization dedicated to the conservation of natural resources. 

storage device

noun
  • A piece of hardware whose main function is to store data. 

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