duplicate

One that resembles or corresponds to another; an identical copy.

"This is a duplicate, but a very good replica."

An original instrument repeated; a document which is the same as another in all essential particulars, and differing from a mere copy in having all the validity of an original.

A pawnbroker's ticket, which must be shown when redeeming a pledged item.

To make a copy of.

"Can you duplicate this kind of key?"

To do repeatedly; to do again.

"You don't need to duplicate my efforts."

To produce something equal to.

"He found it hard to duplicate the skills of his wife."

Being the same as another; identical.

"This is a duplicate entry."

(games) In which the hands of cards, tiles, etc. are preserved between rounds to be played again by other players.

"duplicate Scrabble"