せん状骨[senjoukotsu] scaphoid bone (in wrist near thumb)
挨拶状[aisatsujou] greeting card
依頼状[iraijou] written request
委任状[ininjou] commission
異状[ijou] something wrong

遺言状[yuigonjou] will
渦状[kajou] spiral
液状[ekijou] liquid state
円盤状[enbanjou] disk-shaped
仮免状[karimenjou] temporary certificate

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

圧し石[oshiishi] stone weight
一石[isseki] one game (of go)
一石二鳥[issekinichou] killing two birds with one stone
英国石油[eikokusekiyu] British Petroleum
下石[shitaishi] nether millstone

化粧石鹸[keshousekken] toilet soap
化石[kaseki] fossil
化石学[kasekigaku] paleontology
化石層[kasekisou] fossil bed
化石燃料[kasekinenryou] fossil fuel

神籬[himorogi] primitive shrine (originally a swath of sacred land surrounded by evergreens; later a decorated sakaki branch on an eight-legged table)
籬垣[masegaki] short roughly woven fence

環状石籬[kanjousekiri] stone circle