formulate vs repeal

formulate

verb
  • To put into a clear and definite form of statement or expression. 

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 formulate and repeal occurred in a corpus of books? (source: Google Ngram Viewer )