corroborate vs repeal

corroborate

verb
  • To confirm or support something with additional evidence; to attest or vouch for. 

  • To make strong; to strengthen. 

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. 

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