朱欒[zabon] shaddock
朱印[shuin] red seal
朱印状[shuinjou] license with a red seal (licence)
朱印船[shuinsen] shogunate-licensed trading ship
朱顔[shugan] flushed face

朱子学[shushigaku] neo-Confucianism (based on the teachings of Zhu Xi and his followers)
朱書[shusho] writing in red
朱書き[shugaki] writing in red
朱鞘[shuzaya] red-lacquered sword sheath

金糸雀[kinshijaku] canary (esp. the island canary, Serinus canaria)
燕雀[enjaku] small birds
黄雀[koujaku] tree sparrow (Passer montanus)
欣喜雀躍[kinkijakuyaku] jump up for joy
孔雀[kujaku] peafowl (inc. the male peacock, female peahen, and young peachick)

孔雀石[kujakuseki] malachite
孔雀妙王[kujakumyouou] Mayuri Vidya-raja
四十雀[shijuukara] great tit (Parus major)
雀の涙[suzumenonamida] drop in the bucket