| Subject | English | German |
| IT | block key punch | Blocklocher |
| IT | block key puncher | Blocklocher |
| tech. | key block | Schlüsselblock |
| construct. | key block | Schlußstein (Gewölbe) |
| construct. | keystone, key block, key of an arch crown stone, apex stone | Schlüssel eines Gewölbes |
| construct. | keystone, key block, key of an arch crown stone, apex stone | Schlußstein |
| tech. | numeric key block | Zehnerblock |
| construct. | siting, block plan, lay-out, key plan | Lageplan |
| construct. | siting, block plan, lay-out, key plan | Lage |