Ключевые слова: activity, arbitrator, athlete, authority, background, black, blurred, chalkboard, championship, closeup, coach, color, competition, cord, design, equipment, fair, football, foul, game, goal, league, lifestyle, match, metal, object, play, player, professional, referee, regulation, rules, scheme, signal, soccer, space, sport, sports, strategy, string, symbol, tactical, team, tool, training, umpire, warning, whistle,