羊毫   yáng háo [writing brush made of goat's hair] 用羊毛做成的毛笔
钢笔   gāng bǐ 笔头用金属制成的笔。有贮存墨水的装置,写字时墨水流到笔尖,也叫自来水钢笔.

羊 毫 钢 笔