| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| ornithology textbook | 1.89 | 0.2 | 8121 | 4 | 20 |
| ornithology | 1.53 | 0.7 | 7430 | 95 | 11 |
| textbook | 1.45 | 0.8 | 8373 | 54 | 8 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| ornithology textbook | 0.24 | 0.2 | 1797 | 31 |
| ornithology textbook pdf | 1.38 | 0.2 | 9154 | 48 |
| best ornithology textbooks | 1.74 | 0.5 | 6409 | 58 |
