declarer and dummy
When the bidding has finished and the contract decided, the person who plays the hand is the first person who bid the suit of the final contract.
This person is called the declarer.
The declarer’s partner is now called the dummy, and after the opening lead has been made by the opposition dummy lays all their cards on the table face up. .
That is the end of playing for dummy this game and they have no more to do in this game.
Declarer now has the responsibility to play the cards from both their own and from dummy’s hand.