liner vs padding

liner

noun
  • A removable cover or lining 

  • Someone who fits a lining to something. 

  • Something with a specified number of lines. 

  • A ship of the line. 

  • person born in a certain year (XX liner); person who belongs to a certain line 

  • A large passenger-carrying ship, especially one on a regular route; an ocean liner. 

  • A basic salesperson. 

  • A line drive. 

  • A slab on which small pieces of marble, tile, etc., are fastened for grinding. 

  • The pamphlet which is contained inside an album of music or movie 

  • A formal no show sock. 

  • A lining within the cylinder of a steam engine, in which the piston works and between which and the outer shell of the cylinder a space is left to form a steam jacket. 

padding

noun
  • Anything of little value used to fill up space. 

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

  • Soft filling material used in cushions etc. 

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

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