線
| Level 3 vocabulary | ||
| 線 | (n,n-suf) line (also telephone, railway)/ wire/ beam/ (P) | |
| Level 2 vocabulary | ||
| 下線 | (n) underline/ underscore | |
| 曲線 | (n) curve/ (P) | |
| 光線 | (n) beam/ light ray/ (P) | |
| 新幹線 | (n) bullet train (very high speed)/ shinkansen/ (P) | |
| 水平線 | (n) horizon/ (P) | |
| 線路 | (n) line/ track/ roadbed/ (P) | |
| 脱線 | (n,vs) derailment/ digression/ (P) | |
| 地平線 | (n) horizon/ (P) | |
| 直線 | (n) straight line/ (P) | |
| 電線 | (n) electric line/ (P) | |
| 内線 | (n) phone extension/ indoor wiring/ inner line/ (P) | |
| Level 1 vocabulary | ||
| 沿線 | (adj-no,n) along railway line/ (P) | |
| 幹線 | (n) main line/ trunk line | |
| 三味線 | (n) three-stringed Japanese guitar/ shamisen/ (P) | |
| 点線 | (n) dotted line/ perforated line | |
| 無線 | (n) wireless/ radio/ (P) | |