Ключевые слова: absence, absent, away, bare, barren, blank, emissions, employment, empty, environment, experience, garbage, gone, green, insignificance, insignificant, interest, love, mileage, missing, nada, naught, never, nil, no, none, nonentity, not, nothing, null, nullity, number, percentage, plain, plastic, quantity, recycle, recycling, remove, spotless, tolerance, unused, vacancy, vanish, vanished, void, way, zilch,