锻 锻 duàn Strokes14 Radical 钅 — gold, metal Made of 钅 gold, metal 段 section, piece, division How it's builtPhono-semantic — one part hints at the meaning, another at the sound Play the animation More about the character 锻
炼 炼 liàn Strokes9 Radical 火 — fire, flame Made of 火 fire, flame 柬 card, letter, invitation, note How it's builtPhono-semantic — one part hints at the meaning, another at the sound Play the animation More about the character 炼