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

悪筆[akuhitsu] poor handwriting
一筆書き[hitofudegaki] one-stroke sketch
運筆[unpitsu] brush strokes
鉛筆[enpitsu] pencil
鉛筆削り[enpitsukezuri] pencil sharpener

加筆[kahitsu] correction
画筆[gahitsu] artist's brush
偽筆[gihitsu] forged handwriting
曲筆[kyokuhitsu] misrepresentation
健筆[kenpitsu] powerful pen