copr - copper, mwyndoddi - smelt, diwydiant - industry, diwydiannol - industrial, ffatri - factory, tun - tin, dociau - docks, cwch - boat, caethwasanaeth - servitude, mwg - smoke, llygredd - pollution, gardd - garden, gerddi - gardens, ffwrnais - furnace, cwm - valley, mwyn - ore, gwynt - wind, sbwriel - rubbish, stadiwm - stadium, plwm - lead, glo - coal, melin - mill,

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