(additional) component vs fitment

(additional) component

fitment

noun
  • 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. 

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

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