This is the 9179th most frequent Japanese word.
牌
Tile (used in games like Mahjong); card; piece.
牌 in this sentence refers to mahjong tiles, which are game pieces used in the game of mahjong.
彼は麻雀の牌を並べています。
He is arranging mahjong tiles.
Here, 牌 refers broadly to tiles or pieces as a type of product.
この店では象牙の牌を販売しています。
This store sells ivory tiles.
牌 in this context indicates a specific tile chosen strategically in gameplay, reflecting decision-making in the game.