Noundeclaring a concealed kong; forming a concealed four-of-a-kind

Noun, Suru verbforming a kong by adding a tile drawn from the wall to a declared pung

Nounwinning on a tile robbed from another player's kong

Nounturning a concealed pung into an open kong by calling another player's discard

Nounforming a four-of-a-kind by adding a self-drawn tile to an open three-of-a-kind