Ключевые слова: ash, black, brittle, broken, burn, carbon, catalyst, char, charcoal, combust, combusted, combustion, cooking, dark, dirty, energy, extraction, fractured, glass, hard, hardwod, hardwood, industry, low, material, natural, pores, porous, pure, purification, purifier, purity, quality, raw, stick, texture, traditional, wood,