Base difficulty: Level 170 edit
Level distribution for verb (existence): 3: 2 10: 1 23: 1 135: 1 170: 1 179: 1 214: 8 215: 1 220: 1 329: 1 415: 1 475: 1 1399: 6
No difficulty overrides set. The base difficulty level will be used for all languages.
Add Difficulty Override
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 |
37.58 | 3793 | 100% | 1865 | 3 |
20th_books |
29.87 | 3321 | 100% | 2438 | 2 |
wiki_math |
24.25 | 3203 | 100% | 3203 | 1 |
wiki_geography |
123.42 | 1596 | 100% | 1135 | 2 |
wiki_biology |
139.27 | 2465 | 100% | 950 | 3 |
wiki_modern_life |
94.03 | 2553 | 100% | 1533 | 2 |
wiki_arts |
199.87 | 1010 | 100% | 669 | 3 |
wiki_society |
184.99 | 1223 | 100% | 743 | 3 |
wiki_linguistics |
128.98 | 1216 | 100% | 949 | 2 |
wiki_physical_science |
33.64 | 3680 | 100% | 3680 | 1 |
wiki_history |
85.63 | 1578 | 100% | 1578 | 1 |
early_modern_science |
56.95 | 4514 | 100% | 1578 | 3 |
religious_translated |
0.00 | — | — | — | 0 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
14.17 | 7906 | 100% | 4146 | 2 |
eu_parliament_debates |
69.38 | 2885 | 100% | 1153 | 3 |
openstax_science |
138.81 | 1703 | 100% | 909 | 3 |
openstax_society |
249.26 | 1064 | 100% | 553 | 3 |
wpa_life_histories |
0.00 | — | — | — | 0 |
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.