retain vs surrender

retain

verb
  • To keep in possession or use. 

  • To employ by paying a retainer. 

  • To hold back (a pupil) instead of allowing them to advance to the next class or year. 

  • To keep in one's pay or service. 

  • To hold secure. 

surrender

verb
  • To give up into the power, control, or possession of another. 

  • To yield (a town, a fortification, etc.) to an enemy. 

  • To give up possession of; to yield; to resign. 

  • To yield (oneself) to an influence, emotion, passion, etc. 

  • For a policyholder, to voluntarily terminate an insurance contract before the end of its term, usually with the expectation of receiving a surrender value. 

  • To abandon (one's hand of cards) and recover half of the initial bet. 

  • To give oneself up into the power of another, especially as a prisoner; to submit or give in. 

noun
  • An act of surrendering, submission into the possession of another; abandonment, resignation. 

  • The yielding or delivery of a possession in response to a demand. 

  • The yielding of the leasehold estate by the lessee to the landlord, so that the tenancy for years merges in the reversion and no longer exists. 

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