介殻[kaikaku] sea shell
灰殻[haigara] ashes
貝殻[kaigara] shell
そば殻[sobagara] buckwheat chaff
甲殻[koukaku] carapace

甲殻類[koukakurui] crustacean
菜種殻[natanegara] rapeseed hulls
出し殻[dashigara] grounds (of tea and coffee)
出殻[degara] grounds (of tea and coffee)

開け閉て[aketate] opening and shutting
開閉[kaihei] opening and shutting
基地閉鎖[kichiheisa] (military) base closing
自閉症[jiheishou] autism
腸閉塞[chouheisoku] intestinal obstruction

閉まる[shimaru] to be shut
店閉まい[misejimai] closing up shop
閉ざす[tozasu] to shut
閉じる[tojiru] to close (e.g. book, eyes, meeting, etc.)
閉込める[tojikomeru] to lock up