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

薫香[kunkou] incense
薫蒸消毒[kunjoushoudoku] fumigation
薫製[kunsei] smoking (of fish, meat, etc.)
薫陶[kuntou] education
薫風[kunpuu] balmy breeze

余薫[yokun] lingering odor
薫蒸[kunjou] fumigation
薫る[kaoru] to smell sweet
薫育[kuniku] moral influence