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

遼東の豕[ryoutounoinoko] someone so ignorant of the outside world that he thinks of himself as one-in-a-million (when really it's more like one-in-five) (lit: Liaodong pig)

豕偏[inokohen] kanji "pig" radical at left