| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| proceedings of the national academy sciences | 0.12 | 0.8 | 7592 | 59 | 44 |
| proceedings | 1.8 | 0.3 | 705 | 7 | 11 |
| of | 1.6 | 1 | 8369 | 43 | 2 |
| the | 0.36 | 0.2 | 7327 | 81 | 3 |
| national | 1.76 | 0.1 | 8327 | 44 | 8 |
| academy | 0.51 | 0.8 | 9543 | 38 | 7 |
| sciences | 1.59 | 0.7 | 6147 | 3 | 8 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| proceedings of the national academy sciences | 0.74 | 0.1 | 6878 | 93 |
| proceeding of the national academy of science | 1.13 | 0.4 | 5715 | 70 |
| proceedings national academy of sciences usa | 0.24 | 0.1 | 6514 | 17 |
| journal proceedings national academy sciences | 1.11 | 0.6 | 3860 | 29 |
