| Similarity | Rank | |
|---|---|---|
| drowsiness | 0.820 | 32853 |
| sleepiness | 0.816 | 39645 |
| alertness | 0.814 | 29383 |
| restlessness | 0.787 | 35325 |
| unconsciousness | 0.784 | 43072 |
| melatonin | 0.773 | 27894 |
| sleep | 0.770 | 1323 |
| drowsy | 0.763 | 38464 |
| excitability | 0.759 | 87261 |
| wakeful | 0.754 | 82690 |
| sleeplessness | 0.752 | 49493 |
| insomnia | 0.739 | 13512 |
| stupor | 0.735 | 48804 |
| awakenings | 0.732 | 91522 |
| delirium | 0.730 | 41697 |
| psychomotor | 0.728 | 98903 |
| disorientation | 0.728 | 51531 |
| arousal | 0.728 | 21553 |
| lethargy | 0.728 | 36089 |
| hallucinations | 0.727 | 27406 |
| fitful | 0.724 | 83057 |
| dizziness | 0.724 | 17560 |
| narcolepsy | 0.723 | 58635 |
| quieting | 0.723 | 80152 |
| Melatonin | 0.721 | 55486 |