addition vs reckoning

addition

noun
  • The arithmetic operation of adding. 

  • The act of adding anything. 

  • A dot at the right side of a note as an indication that its sound is to be lengthened one half. 

  • Anything that is added. 

  • A title annexed to a person's name to identify him or her more precisely. 

  • Something added to a coat of arms, as a mark of honour. 

reckoning

noun
  • The action of calculating or estimating something. 

  • The working out of consequences or retribution for one's actions. 

  • An opinion or judgement. 

  • A summing up or appraisal. 

  • The settlement of accounts, as between parties. 

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