holding vs retention

holding

noun
  • A tenure; a farm or other estate held of another. 

  • Something that one owns, especially stocks and bonds. 

  • A determination of law made by a court. 

  • A holding company, or other kind of company (by back-translation from Russian холдинг (xolding)). 

retention

noun
  • The act of retaining or something retained 

  • 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 

  • A memory; what is retained in the mind 

  • 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. 

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