How do you say sword in Japanese?
— 刀 (かたな, katana), 剣 (劍; つるぎ, tsurugi; けん, ken); 剣

Related synonyms for sword in Japanese
steel鋼鉄 (こうてつ, kōtetsu)
Generic synonyms for sword in Japanese
arm腕 (うで, udé)
weapon武器 (ぶき, buki); 兵器 (へいき, heiki)