| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| disasters in 1983 | 1.94 | 1 | 4275 | 83 | 17 |
| disasters | 1.66 | 0.7 | 5273 | 41 | 9 |
| in | 0.86 | 0.9 | 113 | 59 | 2 |
| 1983 | 0.87 | 0.8 | 6333 | 38 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| disasters in 1986 | 1.65 | 0.8 | 2329 | 97 |
| disasters in 1987 | 0.72 | 0.5 | 3985 | 76 |
| disasters in 1989 | 1 | 1 | 5268 | 7 |
| disasters in 1980s | 1.65 | 0.8 | 4384 | 11 |
| disasters in 1988 | 0.61 | 0.8 | 2246 | 53 |
| disasters in 1993 | 0.82 | 0.5 | 5934 | 78 |
| first space shuttle disaster in 1983 | 1.96 | 0.7 | 2018 | 35 |
| korean airlines disaster in 1983 | 0.86 | 0.1 | 7769 | 86 |
| what disaster happened in 1983 | 0.21 | 0.4 | 5902 | 5 |
| disasters in 1990 | 0.21 | 0.6 | 3367 | 83 |
| an environmental disaster in 1987-88 | 0.25 | 0.8 | 2092 | 42 |
| what disaster happened in 1987 | 1.35 | 0.5 | 2157 | 75 |
| space shuttle disasters 1986 | 1.59 | 0.5 | 8266 | 92 |
| chernobyl disaster in 1986 | 1.51 | 0.4 | 8952 | 66 |
| chernobyl nuclear disaster in 1986 | 1.34 | 0.1 | 5095 | 86 |
| the space shuttle challenger disaster in 1986 | 1.44 | 0.6 | 8251 | 70 |
| what caused the challenger disaster in 1986 | 0.81 | 0.7 | 2603 | 97 |
| where did the nuclear disaster happen in 1986 | 1.06 | 0.3 | 5539 | 86 |
