| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | chlorine | US | Chlorine is commonly used in swimming pools to disinfect water and kill bacteria. | 1 |
| 2 | chlorine | United States | Chlorine is commonly used to disinfect swimming pools and maintain water hygiene in the United States and many Western countries. | 1 |
| 3 | chlorine | United States | Chlorine is commonly used in swimming pools for disinfection. | 1 |
| 4 | chlorine | United States | Chlorine is commonly used in swimming pools to keep the water clean and free of bacteria. | 1 |
| 5 | chlorine gas | USA | Associated with use in water treatment and industrial processes | 1 |