| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| historians are the only source of history | 1.92 | 0.5 | 6491 | 97 | 41 |
| historians | 0.42 | 0.9 | 4776 | 36 | 10 |
| are | 1.92 | 0.5 | 1649 | 2 | 3 |
| the | 0.22 | 0.3 | 5830 | 78 | 3 |
| only | 1.83 | 0.9 | 3986 | 86 | 4 |
| source | 1.34 | 0.1 | 3077 | 19 | 6 |
| of | 0.72 | 0.7 | 3700 | 96 | 2 |
| history | 0.31 | 0.2 | 8422 | 79 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| historians are the only source of history | 0.32 | 0.8 | 2762 | 90 |
| is the historians the only source of history | 0.57 | 0.1 | 4901 | 5 |
| what are the source of history | 0.38 | 0.4 | 2790 | 78 |
| is a historian a primary source | 1.14 | 0.2 | 6231 | 6 |
| what type of sources do historians use | 0.02 | 0.4 | 5748 | 34 |
| sources used by historians | 1.71 | 0.7 | 3667 | 60 |
| what kind of sources do historians use | 1.35 | 0.1 | 6322 | 14 |
| what are history and historical sources | 1.97 | 0.9 | 1358 | 47 |
| is history a primary source | 0.1 | 0.5 | 6916 | 74 |
| types of history sources | 2 | 0.6 | 1894 | 39 |
| major sources of history | 1.63 | 1 | 4581 | 17 |
| written sources of history | 0.17 | 0.9 | 691 | 5 |
| why historians use different sources | 0.41 | 0.7 | 9384 | 10 |
