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
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Tier Signals
| Source | Tier | Rank used |
|---|---|---|
cefr |
B1 (3 of 6) | 4200 |
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 |
2.83 | 3837 | 9% | 20000 capped | 2 |
20th_books |
2.08 | 4784 | 9% | 20000 capped | 2 |
wiki_math |
4.30 | 2081 | 9% | 8000 capped | 1 |
wiki_geography |
11.74 | 1050 | 9% | 9000 capped | 1 |
wiki_biology |
6.56 | 1887 | 9% | 9000 capped | 1 |
wiki_modern_life |
13.60 | 928 | 9% | 10000 capped | 1 |
wiki_arts |
12.94 | 936 | 9% | 10000 capped | 1 |
wiki_society |
27.07 | 531 | 9% | 4587 downrated | 3 |
wiki_linguistics |
28.19 | 491 | 9% | 4605 downrated | 2 |
wiki_physical_science |
8.67 | 1535 | 9% | 8000 capped | 1 |
wiki_history |
15.62 | 752 | 9% | 8272 downrated | 1 |
early_modern_science |
7.18 | 1964 | 9% | 10400 capped | 2 |
religious_translated |
1.94 | 3860 | 9% | 10400 capped | 1 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
34.83 | 633 | 9% | 3592 downrated | 4 |
eu_parliament_debates |
66.88 | 265 | 9% | 1721 downrated | 5 |
openstax_science |
0.00 | — | — | — | 0 |
openstax_society |
17.59 | 1243 | 9% | 7626 downrated | 3 |
wpa_life_histories |
1.63 | 4199 | 9% | 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.