濠太剌利[oosutoraria] Australia
外濠[sotobori] outer moat (castle)
環濠[kangou] (circular) moat
濠州[goushuu] Australia

濠日[gounichi] Australia-Japan
伏射濠[fukushagou] sheltered trench
内濠[uchibori] inner moat
空濠[karabori] dry moat

悪循環[akujunkan] vicious circle
一環[ikkan] link (e.g. a part of a larger plan)
印環[inkan] signet ring (in medical contexts, e.g. signet ring cell)
円環[enkan] circle
花環[hanawa] wreath

環境[kankyou] environment
環境グループ[kankyouguruupu] environmental group
環境事業[kankyoujigyou] environmental business
環境庁[kankyouchou] Environment Agency
環境庁長官[kankyouchouchoukan] Director General of Environment Agency