胃嚢[ibukuro] stomach
陰嚢[innou] scrotum
精嚢[seinou] seminal vesicle
胆嚢[tannou] gall bladder
中衣嚢[nakagakushi] inside pocket

土嚢[donou] sandbag
氷嚢[hyounou] ice bag
卵黄嚢[ranounou] yolk sac
卵嚢[rannou] egg sac

ストックホルム症候群[sutokkuhorumushoukougun] Stockholm syndrome
亜群[agun] subgroup
一群[ichigun] group
一群れ[hitomure] group
可換群[kakangun] Abelian group

魚群[gyogun] school of fish
繰込み群[kurikomigun] renormalisation group (physics)
群がる[muragaru] to swarm
群れ[mure] group