clipboard vs retention

clipboard

noun
  • A buffer in memory where the user can store data temporarily while transferring it from one place within an application to another or between applications. 

  • A flat piece of rigid material, such as card or plastic, with a clip at one end under which papers can be held. 

retention

noun
  • A memory; what is retained in the mind 

  • The portion of a potential damange that must be paid for by the holder of an insurance policy. 

  • The act or power of remembering things 

  • The involuntary withholding of urine and faeces 

  • The length of time an individual remains in treatment 

  • The right to withhold a debt, or of retaining property until a debt due to the person claiming the right is duly paid; a lien. 

  • The act of retaining or something retained 

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