偏芯[henshin] eccentricity (in mechanics, electronics, etc.)
燈芯[toushin] (lamp) wick
帯芯[obishin] thick obi sash
摘芯[tekishin] thinning (buds and branches)
芯地[shinji] padding

替え芯[kaeshin] spare lead
鉛筆の芯[enpitsunoshin] lead of a pencil
硬の芯[kounoshin] hard pencil lead
林檎の芯[ringonoshin] core of an apple

可鎔性[kayousei] fusibility
鎔かす[wakasu] to boil
鎔く[toku] to dissolve (paint)
鎔ける[tokeru] to melt
鎔鉱炉[youkouro] smelting furnace

鎔接[yousetsu] weld
可鎔片[kayouhen] fuse
鎔解[youkai] melting
鎔銑[yousen] molten iron