follow up vs surrender

follow up

verb
  • To take further actions remaining after an event; to continue, revisit, or persist; especially, to maintain communication or verify. 

surrender

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

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

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

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

  • 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 follow up and surrender occurred in a corpus of books? (source: Google Ngram Viewer )