| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| smallpox vaccine invention | 1 | 0.2 | 8672 | 98 | 26 |
| smallpox | 1.55 | 0.1 | 2379 | 13 | 8 |
| vaccine | 0.41 | 0.5 | 6476 | 94 | 7 |
| invention | 1.24 | 0.9 | 9858 | 95 | 9 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| smallpox vaccine invention | 1.79 | 0.6 | 114 | 9 |
| smallpox vaccine invention description | 0.55 | 1 | 5639 | 42 |
| smallpox vaccine invention date | 0.35 | 0.8 | 3771 | 68 |
| what year was the smallpox vaccine invented | 1.84 | 0.8 | 4976 | 21 |
| who invented the vaccination for smallpox | 0.9 | 1 | 5471 | 21 |
