| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| how do we classify drugs | 1.67 | 0.6 | 629 | 28 |
| how do we classify psychoactive drugs | 0.34 | 0.3 | 1580 | 20 |
| ways to classify drugs | 1.93 | 0.7 | 7206 | 79 |
| drugs and classifications of drugs | 1.63 | 0.6 | 6209 | 29 |
| what are the classification of drugs | 1.99 | 0.8 | 548 | 50 |
| drugs are classified by | 0.38 | 0.4 | 8213 | 76 |
| drugs and their classification | 1.69 | 0.8 | 2770 | 49 |
| list the classification of drugs | 0.35 | 0.5 | 9198 | 99 |
| what classifies something as a drug | 1.83 | 0.3 | 1082 | 93 |
| what is classified as a drug | 1.32 | 0.6 | 2147 | 62 |
| what are considered psychoactive drugs | 0.59 | 0.1 | 3021 | 86 |
| which is a class of psychoactive drugs | 0.93 | 1 | 1830 | 71 |
| categories of psychoactive drugs | 1.44 | 0.5 | 205 | 68 |
| psychoactive drugs are drugs | 0.84 | 1 | 4121 | 98 |
| main categories of psychoactive drugs | 0.03 | 0.1 | 3347 | 54 |
| what are the psychoactive drugs | 1.31 | 0.1 | 6856 | 40 |
| type of psychoactive drugs | 1.47 | 0.2 | 9268 | 94 |
| psychoactive drugs are typically | 1.47 | 0.5 | 1759 | 54 |
