| Share | Phrase |
|---|
| 15.72% | bentonite clay |
| 11.23% | intercalated clay |
| 8.85% | activated [functioning] clay |
| 7.86% | pillared clay |
| 7.80% | occurring [origin] clay |
| 6.94% | acid [taste] clay |
| 6.82% | clay percolation |
| 6.73% | florida clay |
| 5.64% | substrate [is] clay |
| 5.35% | composited clay [perform operation] |
| 3.23% | clay [reference] know |
| 2.87% | clay treatment |
| 2.16% | include clay [perform operation] |
| 2.00% | clay layer |
| 1.41% | use clay [perform operation] |
| 1.23% | obtain clay [perform operation] |
| 1.22% | base clay [perform operation] |
| 1.16% | clay surface |
| 1.02% | clay [does] include |
| 0.67% | comprise clay [perform operation] |