| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| when did steamships become common | 0.54 | 1 | 8506 | 72 | 33 |
| when | 1.21 | 0.4 | 2260 | 99 | 4 |
| did | 1.94 | 0.6 | 8403 | 64 | 3 |
| steamships | 1.76 | 0.1 | 1955 | 34 | 10 |
| become | 1.39 | 0.7 | 5111 | 77 | 6 |
| common | 1.19 | 0.6 | 6503 | 20 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| when did steamships become common | 1.95 | 1 | 6431 | 95 |
