Ключевые слова: action, america, american, ball, blue, brown, college, competition, competitive, concept, equipment, event, field, flag, football, game, horizontal, lawn, leather, national, oval, patriotic, patriotism, pigskin, play, player, professional, recreation, red, skin, sport, star, stitch, stripe, symbol, team, texture, throw, touchdown, us, usa, white, worn,