Patterning and Duplication

noun

• A copy that corresponds to an original exactly.
  • usage: "he made a duplicate for the files"
  • synonyms: duplicate
• The act of copying or making a duplicate (or duplicates) of something.
  • usage: "this kind of duplication is wasteful"
  • synonyms: gemination

• (n.) The act of duplicating or the state of being duplicated; a doubling; a folding over; a fold.
• (n.) The act or process of dividing by natural growth or spontaneous action; as, the duplication of cartilage cells.