Ключевые слова: active, artificial, background, circle, competition, concept, corner, cup, detail, exercise, fiber, field, football, game, goal, goalie, green, ground, heated, idly, lawn, mark, metaphor, milled, nature, outdoor, penalty, pitch, plastic grass, play, playground, racetrack, recreation, rubber, soccer, sport, spot, stage, surface, synthetic, texture, white, winter playground,