"내야" refers to the infield area of a baseball or softball field, which is located between the bases. It includes positions such as pitcher, catcher, first baseman, second baseman, shortstop, and third baseman. The infield is crucial for defensive plays and often sees the most action during a game. In baseball, the infield is typically made of dirt or grass, allowing for quick movement and fielding of ground balls. Players in the infield must have strong throwing and catching skills to make plays and prevent runs from scoring. The layout of the infield is designed to facilitate teamwork and strategy during gameplay.