How do you say copper in Japanese?
— 銅 (どう, dō; あかがね, akagané: "red metal"); 銅

Related synonyms for copper in Japanese
bull雄牛 (おうし, oushí)
pig豚 (ぶた, buta)
Generic synonyms for copper in Japanese
metal金属 (きんぞく, kinzoku) (1), 金属製のもの (kinzokusei no mono) (2)
policeman警察官 (けいさつかん, keisatsukan); 警官 (けいかん, keikan)