Ключевые слова: academy, activity, arena, artificial, background, ball, black, camp, class, coach, competition, cone, course, court, equipment, exercise, field, football, game, goal, granules, grass, green, ground, infill, lawn, league, line, match, meadow, natural, object, outdoor, physical, pitch, play, playful, playground, recreation, rubber, skill, soccer, sport, stadium, team, tournament, training, turf,