| Similarity | Rank | |
|---|---|---|
| voluntary | 0.782 | 6529 |
| on_a_voluntary_basis | 0.603 | 66073 |
| voluntarily | 0.596 | 16756 |
| Voluntary | 0.589 | 65452 |
| mandatory | 0.526 | 7238 |
| a_community-based | 0.504 | 89904 |
| a_nationwide | 0.496 | 24044 |
| compulsory | 0.493 | 17415 |
| a_statewide | 0.484 | 34182 |
| an_informal | 0.481 | 25146 |
| statutory | 0.477 | 18204 |
| mandate_by | 0.476 | 53169 |
| a_formal | 0.475 | 18306 |
| an_approve | 0.470 | 30644 |
| a_three-year | 0.469 | 50380 |
| a_two-year | 0.467 | 46024 |
| a_private | 0.464 | 7766 |
| an_international | 0.461 | 7481 |
| an_accredit | 0.461 | 84719 |
| an_agree | 0.459 | 90227 |
| a_proactive | 0.459 | 56056 |
| an_independent | 0.456 | 9026 |
| non-governmental | 0.456 | 48577 |
| a_structured | 0.450 | 43386 |
| be_a_not-for-profit | 0.450 | 86688 |