| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| what is emphysema characterized by | 0.19 | 0.6 | 8538 | 47 | 34 |
| what | 1.83 | 0.1 | 8535 | 25 | 4 |
| is | 1.84 | 0.5 | 3492 | 12 | 2 |
| emphysema | 0.58 | 0.7 | 3886 | 42 | 9 |
| characterized | 1.43 | 0.6 | 4072 | 69 | 13 |
| by | 1.12 | 0.7 | 5747 | 83 | 2 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what is emphysema characterized by | 1.82 | 0.1 | 1146 | 91 |
