| Similarity | Rank | |
|---|---|---|
| the_key_challenge | 0.798 | 74955 |
| the_main_challenge | 0.792 | 52376 |
| the_great_challenge | 0.769 | 32862 |
| major_challenge | 0.766 | 94021 |
| the_big_challenge | 0.759 | 19695 |
| big_challenge | 0.681 | 46944 |
| great_challenge | 0.673 | 59535 |
| many_challenge | 0.662 | 34197 |
| current_challenge | 0.654 | 50315 |
| the_main_problem | 0.647 | 46787 |
| challenge_face | 0.647 | 32972 |
| challenge_associate_with | 0.643 | 61107 |
| major_problem | 0.634 | 34279 |
| another_challenge | 0.628 | 48760 |
| challenge_relate_to | 0.624 | 80453 |
| specific_challenge | 0.624 | 92340 |
| the_challenge_face | 0.614 | 22143 |
| common_challenge | 0.611 | 99524 |
| the_most_important_issue | 0.607 | 75837 |
| various_challenge | 0.606 | 99907 |
| the_big_problem | 0.603 | 25566 |
| challenge | 0.603 | 222 |
| these_challenge | 0.597 | 16957 |
| key_issue | 0.596 | 15544 |
| the_main_issue | 0.593 | 33447 |