| Level 4 vocabulary | ||
| 地下鉄 | (n) underground train/ subway/ (P) | ![]() |
| Level 2 vocabulary | ||
| 私鉄 | (n) private railway/ (P) | ![]() |
| 鉄 | (n) iron/ (P) | ![]() |
| 鉄橋 | (n) railway bridge/ iron bridge/ (P) | ![]() |
| 鉄鋼 | (n) iron and steel | ![]() |
| 鉄道 | (n) railroad/ (P) | ![]() |
| 鉄砲 | (n) gun/ (P) | ![]() |
| Level 1 vocabulary | ||
| 製鉄 | (n) iron manufacture/ (P) | ![]() |
| 鉄棒 | (n) iron rod/ crowbar/ horizontal bar (gymnastics)/ (P) | ![]() |