| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | cycad | European | Cycads are often used in landscaping and gardening as ornamental plants. | 1 |
| 2 | cyclosarin | European countries | Considered a highly toxic and dangerous chemical weapon | 1 |
| 3 | cypermethrin | European countries | Cypermethrin is commonly used as a pesticide in agriculture and households to control pests such as mosquitoes, ants, and fleas. | 1 |