瑕疵[kashi] flaw
玉に瑕[tamanikizu] flaw in the crystal
疵瑕[shika] blemish

瑕疵担保責任[kashitanposekinin] warranty against defects
瑕釁[kakin] scratch
瑕疵担保[kashitanpo] warranty against defects

向こう疵[mukoukizu] frontal wound
疵口[kizuguchi] (opening of) a wound
疵つける[kizutsukeru] to wound
疵物[kizumono] defective article
疵薬[kizugusuri] salve

刀疵[katanakizu] sword wound
瑕疵[kashi] flaw
疵痕[kizuato] scar
疵付く[kizutsuku] to be wounded

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