| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| national proceedings of academy science | 0.5 | 1 | 4210 | 27 | 39 |
| national | 1.38 | 0.3 | 2909 | 37 | 8 |
| proceedings | 0.4 | 0.5 | 4796 | 29 | 11 |
| of | 1.6 | 1 | 699 | 44 | 2 |
| academy | 1.85 | 0.5 | 1660 | 72 | 7 |
| science | 0.19 | 0.7 | 1334 | 69 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| national proceedings of academy science | 0.87 | 0.1 | 5400 | 46 |
| proceedings of the national academy sciences | 1.53 | 0.6 | 15 | 41 |
| proceedings national academy of sciences usa | 0.38 | 0.2 | 5603 | 13 |
| journal proceedings national academy sciences | 1.35 | 0.1 | 341 | 96 |
| proceeding of the national academy of science | 1.83 | 0.7 | 3116 | 34 |
