packing vs refill

packing

noun
  • Material used to wrap a product for sale etc.; packaging. 

  • The gathering of birds, animals etc. into a pack. 

  • Material used to fill in the space around something, especially to make a piston etc. watertight or airtight. 

  • The forming of players into a scrum. 

  • The action of putting things together, especially of putting clothes into a suitcase for a journey. 

  • Special material used to fill containers or vessels for certain chemically related applications. 

  • A fee charged to cover the costs of packaging. 

  • The spatial arrangement of objects, items or constituent parts. 

refill

noun
  • A product containing materials to replace those used up by a piece of equipment. 

  • A repeat of a prescription. 

  • An additional helping of food or drink. 

  • A filling after the first. 

verb
  • To repeat a prescription. 

  • To fill up once again. 

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