affirmation vs disavowal

affirmation

noun
  • A form of self-forced meditation or repetition; autosuggestion. 

  • That which is affirmed; a declaration that something is true. 

  • The solemn declaration made by Quakers and others incapable of taking an oath. 

disavowal

noun
  • A denial of knowledge, relationship, and/or responsibility towards something (or someone). 

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