| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| worst disasters in history man made | 1.97 | 0.9 | 348 | 90 |
| the worst man made disaster in history | 0.94 | 0.7 | 227 | 29 |
| worst man made disaster in us history | 0.02 | 0.7 | 4029 | 31 |
| top 10 worst man made disasters in history | 1.81 | 0.8 | 8455 | 58 |
| deadliest man made disasters in history | 0.28 | 0.4 | 7676 | 31 |
| biggest man made disasters in history | 0.45 | 0.1 | 220 | 26 |
| worst human disasters in history | 0.26 | 0.1 | 8532 | 1 |
| largest man made disasters in history | 0.13 | 0.9 | 793 | 13 |
| the worst disasters in history | 1.51 | 0.3 | 4888 | 17 |
| world's worst man made disaster | 0.32 | 0.6 | 9992 | 41 |
| worst disaster in human history | 0.05 | 0.6 | 9981 | 83 |
| top 10 worst disasters in history | 0.63 | 0.7 | 4044 | 74 |
| top 10 worst man-made disasters | 1.25 | 0.9 | 9442 | 67 |
| top man made disasters | 1.77 | 0.7 | 1377 | 4 |
| famous man made disasters | 0.08 | 0.9 | 9021 | 96 |
| the worst disaster in history | 1.9 | 0.9 | 9651 | 69 |
