| Similarity | Rank | |
|---|---|---|
| contraception | 0.843 | 10680 |
| injectable | 0.783 | 50700 |
| abortifacient | 0.756 | 68769 |
| condom | 0.755 | 8880 |
| interruptus | 0.747 | 72305 |
| iud | 0.743 | 30857 |
| breast-feed | 0.737 | 26272 |
| pill | 0.734 | 5412 |
| coitus | 0.726 | 43241 |
| depo | 0.715 | 80688 |
| psychotropic | 0.713 | 40456 |
| analgesic | 0.709 | 24504 |
| infertility | 0.706 | 20365 |
| rubella | 0.706 | 36198 |
| vasectomy | 0.706 | 34035 |
| hrt | 0.705 | 25595 |
| abortion | 0.705 | 4571 |
| pregnancy | 0.704 | 4048 |
| benzodiazepine | 0.703 | 38886 |
| methadone | 0.698 | 27683 |
| anti-malaria | 0.694 | 99022 |
| prophylaxis | 0.688 | 33628 |
| tranquillizer | 0.687 | 22516 |
| depo-provera | 0.686 | 64534 |
| venereal | 0.685 | 22555 |