| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | ruffs (clothing) | Germany | A symbol of opulence and refinement among the upper classes in prior eras | 1 |
| 2 | ruhr | Germany | The Ruhr region is an important industrial and economic area in Germany, known for coal mining and heavy industry. | 1 |
| 3 | ruhr | Germany | The Ruhr region is known for its heavy industrial history and is an important industrial hub in Germany. | 1 |
| 4 | ruhr | Germany | The Ruhr area is a heavily industrialized region known for coal mining and steel production. | 1 |
| 5 | ruhr | Germany | The Ruhr region is known for its industrial history and coal mining. | 1 |
| 6 | ruhr | Germany | The Ruhr area in Germany is known for its heavy industry and coal mining history. | 1 |