confirmation vs subversion

confirmation

noun
  • An official indicator that things will happen as planned. 

  • A ceremony of sealing and conscious acknowledgement of the faith in many Christian churches, typically around the ages of 14 to 18; considered a sacrament in some churches, including Catholicism, but not in most Protestant churches. 

  • A verification that something is true or has happened. 

  • An act whereby something conditional or voidable is made sure and unavoidable, especially the possession of an estate. 

subversion

noun
  • The condition of being subverted. 

  • A systematic attempt to overthrow a government by working from within; undermining. 

  • The act of overthrowing a government or a ruler; dethronement. 

  • A revision considered more similar to preceding subversions than a revision deemed a new "version" is to preceding versions. 

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