Base difficulty: Level 475 edit
Level distribution for verb (change): 22: 4 28: 1 109: 1 140: 1 162: 2 194: 1 254: 1 255: 1 309: 2 311: 1 321: 16 410: 2 415: 2 475: 5 1040: 1 1090: 1 1399: 38
No difficulty overrides set. The base difficulty level will be used for all languages.
Add Difficulty Override
Tier Signals
| Source | Tier | Rank used |
|---|---|---|
cefr |
B2 (4 of 6) | 6900 |
Rank used = synthetic rank this tier contributes to the combined frequency rank (lower = more common).
Corpus Frequency
| Corpus | Freq (per M) | Best form | Share | Zipf rank | Forms |
|---|---|---|---|---|---|
19th_books |
2.90 | 5837 | 25% | 20000 capped | 1 |
20th_books |
3.00 | 8007 | 25% | 17661 downrated | 2 |
wiki_math |
24.54 | 2429 | 25% | 3573 downrated | 3 |
wiki_geography |
16.19 | 2177 | 25% | 8708 downrated | 1 |
wiki_biology |
6.86 | 4289 | 25% | 9000 capped | 1 |
wiki_modern_life |
32.79 | 1871 | 25% | 4491 downrated | 2 |
wiki_arts |
6.69 | 4810 | 25% | 10000 capped | 1 |
wiki_society |
22.46 | 3282 | 25% | 5804 downrated | 3 |
wiki_linguistics |
7.39 | 3488 | 25% | 9000 capped | 1 |
wiki_physical_science |
70.66 | 980 | 25% | 1973 downrated | 4 |
wiki_history |
25.28 | 1980 | 25% | 5358 downrated | 2 |
early_modern_science |
20.50 | 1795 | 25% | 5253 downrated | 2 |
religious_translated |
8.57 | 2674 | 25% | 10400 capped | 1 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
9.06 | 3828 | 25% | 9737 downrated | 2 |
eu_parliament_debates |
0.00 | — | — | — | 0 |
openstax_science |
98.19 | 843 | 25% | 1412 downrated | 4 |
openstax_society |
18.29 | 2818 | 25% | 6704 downrated | 2 |
wpa_life_histories |
2.74 | 6066 | 25% | 20000 capped | 1 |
Best form = the single best-ranked form in the corpus, share-blind — how the spelling itself ranked. Share = how much of that spelling belongs to this lemma, when several senses compete for it. Zipf rank = all the forms combined (variant spellings included), each scaled by its share, and what feeds the combined frequency rank. Combining forms improves on the best form, but a share below 100% pushes the other way and usually wins: a sense holding a small slice of a common spelling is a rare word, so its rank lands downrated below the best form — and once it falls past what the corpus can support it is capped at the rank an unlisted word would get.