| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| history of steam boiler | 1.85 | 0.1 | 8972 | 29 | 23 |
| history | 1.7 | 1 | 5176 | 15 | 7 |
| of | 1.45 | 0.3 | 7752 | 92 | 2 |
| steam | 1.5 | 1 | 8099 | 61 | 5 |
| boiler | 0.41 | 0.1 | 9821 | 55 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| history of steam boiler | 0.51 | 0.4 | 3813 | 24 |
