Construction consisting of steps designed to bridge vertical distances.
| LADDER OR STAIRS | narrower | LADDER |
| LADDER OR STAIRS | narrower | STAIRS |
| LADDER OR STAIRS | linked | STEP |
| LADDER OR STAIRS | linked | BRIDGE |
| LADDER OR STAIRS | linked | HARROW (TOOL) |
| LADDER | broader | LADDER OR STAIRS |
| STAIRS | broader | LADDER OR STAIRS |
| BRIDGE | linked | LADDER OR STAIRS |
| HARROW (TOOL) | linked | LADDER OR STAIRS |
| STEP | linked | LADDER OR STAIRS |
| Id | Concept in source | Conceptlist |
|---|---|---|