addition vs coda

addition

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

  • The act of adding anything. 

  • The arithmetic operation of adding. 

  • 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. 

coda

noun
  • The optional final part of a syllable, placed after its nucleus, and usually composed of one or more consonants. 

  • In seismograms, the gradual return to baseline after a seismic event. The length of the coda can be used to estimate event magnitude, and the shape sometimes reveals details of subsurface structures. 

  • A conclusion (of a statement or event, for example), final portion, tail end. 

  • A passage that brings a movement or piece to a conclusion through prolongation. 

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