Base difficulty: Level 280 edit
Level distribution for noun (concept_idea): 19: 2 20: 3 26: 1 27: 1 221: 29 270: 31 274: 37 275: 31 280: 29 380: 2 1000: 1 1030: 1 1060: 5 1070: 6 1110: 7 1120: 1
No difficulty overrides set. The base difficulty level will be used for all languages.
Add Difficulty Override
python -m storage.admin --calc-ranks to populate)
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 |
44.69 | 1039 | 50% | 2078 downrated | 1 |
20th_books |
33.12 | 1374 | 50% | 2748 downrated | 1 |
wiki_math |
0.00 | — | — | — | 0 |
wiki_geography |
0.00 | — | — | — | 0 |
wiki_biology |
0.00 | — | — | — | 0 |
wiki_modern_life |
0.00 | — | — | — | 0 |
wiki_arts |
0.00 | — | — | — | 0 |
wiki_society |
77.69 | 809 | 50% | 1618 downrated | 1 |
wiki_linguistics |
0.00 | — | — | — | 0 |
wiki_physical_science |
0.00 | — | — | — | 0 |
wiki_history |
14.00 | 4159 | 50% | 8318 downrated | 1 |
early_modern_science |
18.80 | 2710 | 50% | 5420 downrated | 1 |
religious_translated |
62.62 | 833 | 50% | 1666 downrated | 1 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
50.07 | 1288 | 50% | 2576 downrated | 1 |
eu_parliament_debates |
44.84 | 1305 | 50% | 2610 downrated | 1 |
openstax_science |
18.87 | 3217 | 50% | 6434 downrated | 1 |
openstax_society |
34.82 | 1977 | 50% | 3954 downrated | 1 |
wpa_life_histories |
14.29 | 2756 | 50% | 5512 downrated | 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.