駒

1. Origins, structure, and basic meaning

• Structure: 駒(こま) is a noun for a piece moved on a game board, especially a piece used in shogi.
• Basic usage: Moving a piece appears in 白い駒を進める, while the arrangement on a shogi board appears in 将棋盤に駒が並ぶ.

2. Common pitfalls and similar expressions

• Piece and board
  • 駒 is an individual movable piece, while 将棋盤 is the board on which the pieces are placed.
• Object and location
  • Use 駒を for the piece being moved and 将棋盤に for the board on which pieces are arranged.