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)

吾亦紅[waremokou] burnet
口紅[kuchibeni] lipstick
紅焔[kouen] red flame
紅花[benibana] safflower
紅海[koukai] Red Sea

紅冠鳥[koukanchou] cardinal (bird) (Cardinalis cardinalis)
紅顔[kougan] rosy cheeks
紅唇[koushin] red lips
紅藻[kousou] red algae
紅茶[koucha] black tea