| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| railroad in the us | 1.13 | 0.6 | 1762 | 81 | 18 |
| railroad | 0.51 | 0.7 | 9620 | 25 | 8 |
| in | 0.21 | 0.9 | 1937 | 80 | 2 |
| the | 1.61 | 0.9 | 4313 | 94 | 3 |
| us | 0.59 | 1 | 8352 | 47 | 2 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| railroad in the us | 1.48 | 0.3 | 428 | 85 |
| railroad in the us history | 0.96 | 0.5 | 9877 | 45 |
| railroads in the usa | 1.9 | 0.2 | 1330 | 12 |
| railroads in the us map | 0.47 | 1 | 1396 | 4 |
| railroads in the us 1800s | 1.32 | 0.4 | 5282 | 31 |
| railway in the us | 0.72 | 0.9 | 1765 | 72 |
| railroad in the united states | 0.28 | 0.3 | 159 | 45 |
| railroad in the sky | 1.66 | 0.5 | 1738 | 12 |
| how many miles of railroad in the us | 0.51 | 0.2 | 2144 | 92 |
| largest railroad companies in the us | 1.42 | 0.9 | 7969 | 33 |
| an uncontrolled railroad crossing usually has | 1.72 | 0.8 | 9151 | 48 |
| did quakers help in the underground railroad | 1.67 | 0.1 | 1521 | 56 |
| controlled railroad crossings usually have | 1.67 | 1 | 2668 | 11 |
| best railroad museums in the us | 1.46 | 0.8 | 1376 | 21 |
| best railroad trips in usa | 0.27 | 0.3 | 9548 | 21 |
| railroad gauge in the usa | 0.57 | 0.6 | 6555 | 96 |
