| elevated railway(noun, expression, line, track, railway) |
| line(noun, track, railway, subway, railroad) |
| metro(noun, line, track, railway, subway) |
| monorail(noun, line, track, railway, subway) |
| rail line(noun, expression, line, track, railway) |
| railway(noun, line, track, subway, railroad) |
| streetcar line(noun, expression, line, track, railway) |
| tracks(noun, line, track, railway, subway) |
| trainline |
| trolley line(noun, expression, line, track, railway) |
| tube(noun, line, track, railway, subway) |
| underground railway(noun, expression, line, track, railway) |
| rail(noun, line, track) |
| railroad(noun, line, track) |
| route(noun, line, track) |
| subway(noun, line, track, railway) |
| track(noun, line, railroad) |
| train track(noun, expression, line, track) |