Ключевые слова: aqua, background, block, brown, cartridge, chemical, clean, cleanse, clear, color, comparison, contrasts, cylinder, dirt, dirty, disaster, drink, environment, equipment, filter, health, healthy, home, household, improvement, industry, isolated, liquid, manufacturing, mud, new, obsolete, old, pipe, plumbing, pollution, purification, purity, rust, rusty, silt, stained, sump, two, unhealthy, unhygienic, used, view, water, white,