repeal vs retain

repeal

verb
  • To suppress; to repel. 

  • To recall; to summon (a person) again; to bring (a person) back from exile or banishment. 

  • To cancel, invalidate, annul. 

noun
  • An act or instance of repealing. 

retain

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

  • To employ by paying a retainer. 

  • To keep in one's pay or service. 

  • To keep in possession or use. 

  • To hold secure. 

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