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

茹でる[yuderu] to boil
茹で蛸[yudetako] octopus (boiled)
茹る[yudaru] to boil
釜茹で[kamayude] boiling in an iron pot
固茹で[katayude] hard-boiled

固茹で卵[katayudetamago] hard-boiled egg
茹で卵[yudetamago] boiled egg
生茹で[namayude] half-boiled
茹がく[yugaku] to parboil
茹で麺[yudemen] boiled noodles