屎尿[shinyou] excreta
鼻屎[hanakuso] nasal discharge
屎尿処理[shinyoushori] sewage disposal
目屎[mekuso] eye discharge or mucus

耳屎[mimikuso] earwax
鉄屎[kanakuso] slag
目糞鼻屎を笑う[mekusohanakusowowarau] the pot calling the kettle black (lit: for the sleep in one's eyes to laugh at the snot in one's nose)
歯屎[hakuso] (dental) plaque

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