| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| underground airlines summary | 1.11 | 1 | 5980 | 99 | 28 |
| underground | 0.62 | 1 | 2770 | 4 | 11 |
| airlines | 1.75 | 1 | 1500 | 3 | 8 |
| summary | 0.6 | 0.6 | 4105 | 89 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| underground airlines summary | 1.27 | 0.1 | 1281 | 29 |
| underground airlines chapter summary | 1.92 | 0.6 | 1123 | 24 |
| underground railroad chapter summary | 1.43 | 1 | 8427 | 50 |
| notes from the underground chapter summary | 1.72 | 1 | 3627 | 99 |
| notes from the underground chapter 1 summary | 0.67 | 0.4 | 4017 | 34 |
| the underground railroad summary chapter 1 | 0.77 | 0.2 | 7591 | 6 |
| underground to canada chapter summary | 0.43 | 0.1 | 7436 | 2 |
| underground airlines reading guide | 0.64 | 0.9 | 4357 | 41 |
| notes from the underground part 1 summary | 0.45 | 0.2 | 200 | 76 |
| notes from the underground summary | 0.15 | 1 | 1888 | 46 |
| the underground railroad chapter 1 | 0.12 | 0.7 | 3563 | 75 |
| the underground railroad summary sparknotes | 0.21 | 0.7 | 4625 | 61 |
| the underground railroad summary | 0.2 | 0.3 | 2920 | 46 |
| underground railroad short summary | 1.9 | 0.7 | 2047 | 85 |
