Base difficulty: Level 1399 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 |
38.90 | 3457 | 100% | 2015 | 2 |
20th_books |
16.41 | 6170 | 100% | 3632 | 2 |
wiki_math |
0.00 | — | — | — | 0 |
wiki_geography |
80.53 | 1759 | 100% | 1759 | 1 |
wiki_biology |
0.00 | — | — | — | 0 |
wiki_modern_life |
0.00 | — | — | — | 0 |
wiki_arts |
66.73 | 2087 | 100% | 2087 | 1 |
wiki_society |
27.06 | 4748 | 100% | 4748 | 1 |
wiki_linguistics |
0.00 | — | — | — | 0 |
wiki_physical_science |
0.00 | — | — | — | 0 |
wiki_history |
122.58 | 1790 | 100% | 1111 | 2 |
early_modern_science |
18.98 | 4773 | 100% | 4773 | 1 |
religious_translated |
85.36 | 2083 | 100% | 1113 | 2 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
17.41 | 6713 | 100% | 3745 | 2 |
eu_parliament_debates |
63.43 | 2599 | 100% | 1229 | 3 |
openstax_science |
27.43 | 4063 | 100% | 4063 | 1 |
openstax_society |
54.98 | 3350 | 100% | 2081 | 2 |
wpa_life_histories |
6.27 | 9141 | 100% | 9141 | 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.