Basketball is a team sport played on a rectangular court, typically indoors, between two teams, each consisting of five players. The primary objective is to score points by shooting the basketball through the opponent's hoop while also preventing the opposing team from scoring.

Key elements of basketball include:

1. Court and Equipment: A basketball court is typically 94 feet in length and 50 feet in width, with hoops at either end. The standard basketball hoop is 10 feet above the ground and has a diameter of 18 inches. The game is played with a round ball that is bounced and passed between players.
2. Scoring: Points are scored by shooting the ball through the opponent's hoop. Different shots have different point values: a field goal made from within the three-point line counts for two points, and a shot made from beyond the three-point line earns three points. Free throws, awarded after certain fouls, are worth one point each.
3. Players and Positions: Each team consists of five players who assume different positions, such as point guard, shooting guard, small forward, power forward, and center. Players have specific roles and responsibilities based on their positions, although modern basketball often involves versatile players capable of playing multiple positions.
4. Gameplay: The game begins with a tip-off, where the referee throws the ball into the air, and players from each team attempt to gain possession. Teams advance the ball by dribbling (bouncing the ball while moving) or passing it to teammates. The offensive team tries to create scoring opportunities by moving the ball, setting screens, and executing plays, while the defensive team aims to prevent scoring by stealing the ball, blocking shots, or forcing turnovers.
5. Time and Rules: A basketball game is divided into quarters, typically lasting 12 minutes each in professional leagues (though it varies in different levels of play). In the event of a tie at the end of regulation time, overtime periods are played to determine the winner. Players must adhere to rules governing dribbling, traveling, fouls, and other aspects of gameplay.

Basketball is known for its fast-paced and dynamic nature, requiring teamwork, skillful ball-handling, shooting accuracy, strategic thinking, and athleticism. It's a popular sport globally, played at various levels, from recreational and school competitions to professional leagues like the NBA (National Basketball Association).