addition vs scattering

addition

noun
  • The act of adding anything. 

  • The arithmetic operation of adding. 

  • 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. 

scattering

noun
  • The total number of votes awarded to nonmajor or unlisted candidates. 

  • The process whereby a beam of waves or particles is dispersed by collisions or similar interactions. 

  • A small quantity of something occurring at irregular intervals and dispersed at random points. 

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