| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| which religion is the oldest | 1.92 | 1 | 2117 | 42 |
| which religion is the oldest in the world | 0.73 | 0.5 | 4037 | 96 |
| which religion is the oldest religion | 0.89 | 0.9 | 1005 | 23 |
| which religion is the oldest living religion | 1.16 | 0.1 | 3671 | 19 |
| which religion is the oldest from this list | 0.16 | 0.8 | 4406 | 13 |
| oldest religion in the world | 0.03 | 0.9 | 6657 | 78 |
| oldest religion in the world with proof | 0.2 | 0.3 | 2950 | 39 |
| oldest monotheistic religion | 0.04 | 0.7 | 5286 | 42 |
| oldest known religion | 0.68 | 0.2 | 1464 | 49 |
| oldest religion on earth | 0.35 | 1 | 7989 | 99 |
| second oldest religion in the world | 0.81 | 0.1 | 2262 | 62 |
