Base difficulty: Level 4 edit
Level distribution for noun (shape): 4: 12 12: 2 370: 13 1080: 3 1120: 1 1399: 1
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 |
13.45 | 5288 | 100% | 5288 | 1 |
20th_books |
6.10 | 8849 | 100% | 8849 | 1 |
wiki_math |
613.83 | 243 | 100% | 213 | 2 |
wiki_geography |
37.12 | 3663 | 100% | 3663 | 1 |
wiki_biology |
0.00 | — | — | — | 0 |
wiki_modern_life |
0.00 | — | — | — | 0 |
wiki_arts |
0.00 | — | — | — | 0 |
wiki_society |
38.86 | 3530 | 100% | 3530 | 1 |
wiki_linguistics |
23.49 | 4091 | 100% | 4091 | 1 |
wiki_physical_science |
127.93 | 1524 | 100% | 1090 | 2 |
wiki_history |
42.61 | 3173 | 100% | 3173 | 1 |
early_modern_science |
101.33 | 1529 | 100% | 1096 | 2 |
religious_translated |
0.00 | — | — | — | 0 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
12.14 | 6163 | 100% | 6163 | 1 |
eu_parliament_debates |
34.61 | 2652 | 100% | 2652 | 1 |
openstax_science |
103.42 | 1846 | 100% | 1254 | 2 |
openstax_society |
37.58 | 3248 | 100% | 3248 | 1 |
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.