| Similarity | Rank | |
|---|---|---|
| twentieth | 0.869 | 14125 |
| history's | 0.865 | 51268 |
| 20th-century | 0.839 | 53488 |
| era's | 0.819 | 81740 |
| twentieth-century | 0.814 | 52611 |
| century | 0.804 | 1422 |
| twenty-first | 0.785 | 31690 |
| nineteenth | 0.776 | 15827 |
| mid-20th | 0.773 | 75724 |
| nineteenth-century | 0.733 | 41863 |
| decade's | 0.726 | 66905 |
| half-century | 0.725 | 46674 |
| 20th | 0.725 | 5081 |
| eighteenth | 0.725 | 24599 |
| quarter-century | 0.718 | 79790 |
| 19th-century | 0.706 | 39002 |
| mid-nineteenth | 0.702 | 88557 |
| eighteenth-century | 0.696 | 67905 |
| generation's | 0.692 | 54061 |
| seventeenth | 0.691 | 30728 |
| 21st-century | 0.689 | 54355 |
| mid-19th | 0.688 | 69151 |
| millennium | 0.684 | 17980 |
| epochal | 0.674 | 97969 |
| iconoclastic | 0.672 | 82924 |