| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | copper | United States | Copper is commonly used in electrical wiring and plumbing. | 1 |
| 2 | copper electroplating | United States | Common industrial process used in manufacturing and engineering applications | 1 |
| 3 | copper electroplating | United States | Common process used in manufacturing and industrial applications for metal finishing and decorative purposes. | 1 |
| 4 | copper electroplating | United States | Used commonly in manufacturing and metalworking industries | 1 |