antonym vs repudiation

antonym

noun
  • A word which has the opposite meaning of another word. 

  • A word that describes one end of a scale, while its opposite describes the other end, such as large versus small; a gradable antonym. 

repudiation

noun
  • The act of refusing to accept; the act of repudiating. 

  • The young man's repudiation of the church's doctrines caused a conflict with his religious parents. 

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