Ключевые слова: agriculture, artificial, background, birthday, botany, celebrating, celebration, ceremony, certificate, character, conceptual, conservation, decorate, design, digit, eco, ecological, ecology, environment, fall, football, fresh, game, grass, green, idea, label, leaf, marriage, mathematics, natural, nature, number, numeral, play, season, shape, sign, sport, stadium, symbol, text, turf, type, typeset, typographic, typography, yard,