| Similarity | Rank | |
|---|---|---|
| parascending | 0.851 | 87243 |
| sub-aqua | 0.847 | 60687 |
| caving | 0.841 | 45315 |
| pony-trekking | 0.840 | 48501 |
| scuba-diving | 0.840 | 93607 |
| paragliding | 0.840 | 46810 |
| pedalo | 0.836 | 67578 |
| waterski | 0.835 | 55596 |
| snorkelling | 0.829 | 34841 |
| hill-walking | 0.823 | 54291 |
| pedaloe | 0.822 | 72753 |
| biking | 0.817 | 28780 |
| horse-riding | 0.815 | 26536 |
| pot-holing | 0.814 | 91358 |
| bird-watching | 0.813 | 35673 |
| orienteering | 0.805 | 42052 |
| windsurfing | 0.804 | 12802 |
| waterskiing | 0.803 | 40886 |
| scuba | 0.803 | 23477 |
| wind-surfing | 0.792 | 42197 |
| water-ski | 0.790 | 59429 |
| water-skiing | 0.789 | 44481 |
| horseriding | 0.786 | 60636 |
| windsurfer | 0.786 | 21314 |
| white-water | 0.776 | 69734 |