煤 ⇒
煤气 méiqì, [煤氣], coal gas/gas (fuel)
煤 méi, coal/CL:塊|块[kuài]
煤矿 méikuàng, [煤礦], coal mine/coal seam
煤油 méiyóu, kerosene
煤炭 méitàn, coal
煤气灯 煤气站 煤块 煤灰 méihuī, soot
煤渣 méizhā, slack
煤球 méiqiú, charcoal briquette
煤烟 煤油灯 煤气灶 采煤 cǎiméi, [採煤], coal mining/coal extraction/coal cutting
煤车 无烟煤 wúyānméi, [無煙煤], anthracite
煤气罐 煤气炉 煤窑 燃煤 ránméi, coal fuel
煤砖 煤焦油 méijiāoyóu, coal tar
煤厂 煤泥 煤油炉 煤场 煤尘 煤井 采煤机 煤火 蜂窝煤 fēngwōméi, [蜂窩煤], hexagonal household coal briquet
煤坑 泥煤 níméi, peat
渣 ⇒
渣 zhā, slag (in mining or smelting)/dregs
渣滓 zhāzǐ, residue/dregs/disreputable people
残渣 cánzhā, [殘渣], remainder/filtered out residue/sediment/waste product/debris/detritus/rubbish
渣子 煤渣 méizhā, slack
矿渣 kuàngzhā, [礦渣], slag (mining)
废渣 fèizhā, [廢渣], industrial waste product/slag
油渣 渣土 沉渣 豆腐渣 dòufuzhā, okara (i.e. soy pulp, a by-product of making soymilk or tofu)