| Similarity | Rank | |
|---|---|---|
| more_difficult | 0.778 | 14322 |
| challenging | 0.676 | 6371 |
| more_complicated | 0.659 | 25563 |
| more_complex | 0.654 | 11548 |
| difficult | 0.653 | 2515 |
| the_most_challenging | 0.604 | 54484 |
| more_interesting | 0.593 | 15748 |
| a_challenging | 0.582 | 34700 |
| a_difficult | 0.579 | 12053 |
| more_exciting | 0.579 | 44807 |
| tricky | 0.571 | 23559 |
| harder | 0.569 | 27866 |
| more_important | 0.566 | 11392 |
| the_most_difficult | 0.565 | 35489 |
| extremely_difficult | 0.563 | 93625 |
| very_difficult | 0.563 | 34974 |
| more_relevant | 0.551 | 38074 |
| more_dangerous | 0.550 | 40622 |
| daunting | 0.549 | 43508 |
| harder_to | 0.544 | 86185 |
| the_great_challenge | 0.540 | 32862 |
| more_significant | 0.537 | 44702 |
| tough | 0.532 | 4367 |
| be_a_challenging | 0.531 | 67849 |
| more_diverse | 0.530 | 46820 |