做す[nasu] to make
見做す[minasu] to consider as
思い做しか[omoinashika] imagination

言做す[iinasu] to speak as though something were actually the case
聞き做す[kikinasu] to consider
心做し[kokoronashi] somehow

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