Association football, more commonly known as football or soccer, is a team sport played between two teams of eleven players with a spherical ball.

It is played by 250 million players in over 200 countries and dependencies, making it the world's most popular sport. The game is played on a rectangular field with a goal at each end. The object of the game is to score by getting the ball into the opposing goal.

Players are not allowed to touch the ball with their hands or arms while it is in play, unless they are goalkeepers (and then only when within their penalty area). Other players mainly use their feet to strike or pass the ball, but may also use any part of their body except the hands and the arms. The team that scores the most goals by the end of the match wins. If the score is level at the end of the game, either a draw is declared or the game goes into extra time or a penalty shootout depending on the format of the competition.

The Laws of the Game were originally codified in England by The Football Association in 1863. Association football is governed internationally by the International Federation of Association Football (FIFA; French: Fédération Internationale de Football Association), which organises World Cups for both men and women every four years.

The 2018 FIFA World Cup will be the 21st FIFA World Cup, a quadrennial international football tournament contested by the men's national teams of the member associations of FIFA. It is scheduled to take place in Russia from 14 June to 15 July 2018, after the country was awarded the hosting rights on 2 December 2010. This will be the first World Cup held in Europe since 2006; all but one of the stadium venues are in European Russia, west of the Ural Mountains to keep travel time manageable.

Laws of the Game

IFAB currently acknowledges 17 laws of soccer that are the standard for any professional or international match played. They are as follows:

• Law 1: The Field of Play
• Law 2: The Ball
• Law 3: The Number of Players
• Law 4: The Players’ Equipment
• Law 5: The Referee
• Law 6: The Assistant Referees
• Law 7: The Duration of the Match
• Law 8: The Start and Restart of Play
• Law 9: The Ball In and Out of Play
• Law 10: The Method of Scoring
• Law 11: Offside
• Law 12: Fouls and Misconduct
• Law 13: Free Kicks
• Law 14: The Penalty Kick
• Law 16: The Goal Kick
• Law 17: The Corner Kick

Swimming is an individual or team sport and activity. Competitive swimming is one of the most popular Olympic sports, with events in butterfly, backstroke, breaststroke, freestyle, and individual medley. In addition to these individual events, Olympic swimmers also take part in relays. Swimmers can also compete in open-water events (e.g., in a sea or lake).