磋 Strokes Write it Listen 磋 cuō to polish, to buff; to examine, to deliberate HSK 7–9 14 strokes Radical 石 Sound + meaning 1 word Built from石meaningshístone, rock, mineral差soundchàdifference, gap; almost, nearly; in error; an officer How it works石 hints at the meaning (stone), and 差 chà hints at the sound.