碾 ⇒
碾 niǎn, stone roller/roller and millstone/to grind/to crush/to husk
碾碎 niǎnsuì, to pulverize/to crush
碾压 niǎnyā, [碾壓], to crush or compact by means of a roller
槌 ⇒
槌 chuí, mallet/pestle/beetle (for wedging or ramming)
棒槌 bàngchuí, wooden club (used to beat clothes in washing)
鼓槌 一槌定音 yīchuídìngyīn, variant of 一錘定音|一锤定音[yī chuí dìng yīn]