ムール貝[muurugai] moule
一枚貝[ichimaigai] univalve
烏貝[karasugai] cockscomb pearl mussel (Cristaria plicata)
貝ボタン[kaibotan] mother-of-pearl button
貝貨[baika] shell money

貝がら[kaigara] shell
貝柱[kaibashira] adductor muscle
貝毒[kaidoku] shellfish poison
貝類[kairui] shellfish

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

暗雲[anun] dark clouds
闇雲[yamikumo] recklessly
いわし雲[iwashigumo] cirro-cumulus
雨雲[amagumo] rain cloud
雲隠れ[kumogakure] disappearance

雲影[unei] cloud shape
雲海[unkai] sea of clouds
雲間[kumoma] rift between clouds
雲形[kumogata] cloud formations