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Distinguish From: 

n. (dup, dupe, abbr.) ~ 1. One of a number of copies of an object made at the same time from the same master. - 2. The process of making such copies.


Duplicate1 and copy1, 2 are often synonyms. 'Duplicate' connotes versions that may be considered an original; for example, duplicate prints made from the same negative. 'Copy' connotes something reproduced from an original; for example, a photocopy.