padding vs upholstery

padding

noun
  • Soft filling material used in cushions etc. 

  • Extra characters such as spaces added to a record to fill it out to a fixed length. 

  • Extraneous text added to a message for the purpose of concealing its beginning, ending, or length. 

  • Anything of little value used to fill up space. 

upholstery

noun
  • The materials used in upholstering furniture. 

  • The craft or business of upholstering furniture. 

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