addition vs fitment

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. 

fitment

noun
  • The act of furnishing with fitments; an instance of such an act. 

  • The categorisation of an employee, for the purpose of calculating salary or allowances. 

  • A thing fitted to another in order to accomplish a specific purpose. 

  • An item of permanent furniture or equipment. 

  • The proper positioning and orientation of a thing for it to serve its designed purpose. 

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