implementation vs repeal

implementation

noun
  • The process of moving an idea from concept to reality. In business, engineering and other fields, implementation refers to the building process rather than the design process. 

  • A result of implementing something; a finished product, system or device. 

repeal

noun
  • An act or instance of repealing. 

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

  • To cancel, invalidate, annul. 

  • To suppress; to repel. 

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