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

瓦礫[gareki] rubble
砂礫[sareki] pebbles
紙礫[kamitsubute] paper pellet
梨の礫[nashinotsubute] not getting a reply
飛礫[tsubute] stone thrown at somebody

礫岩[rekigan] conglomerate stone
火山礫[kazanreki] lapilli
雪礫[yukitsubute] snowball
闇夜の礫[yamiyonotsubute] aimless attempt