Base difficulty: Level 275 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 |
|---|---|---|
basic_english |
Basic (1 of 2) | 600 |
cefr |
A1 (1 of 6) | 800 |
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 |
23.58 | 1855 | 50% | 3710 downrated | 1 |
20th_books |
24.57 | 1725 | 50% | 3450 downrated | 1 |
wiki_math |
47.11 | 1271 | 50% | 2542 downrated | 1 |
wiki_geography |
60.13 | 1073 | 50% | 2146 downrated | 1 |
wiki_biology |
54.31 | 1281 | 50% | 2562 downrated | 1 |
wiki_modern_life |
67.58 | 1046 | 50% | 2092 downrated | 1 |
wiki_arts |
63.61 | 1021 | 50% | 2042 downrated | 1 |
wiki_society |
44.54 | 1528 | 50% | 3056 downrated | 1 |
wiki_linguistics |
14.88 | 3241 | 50% | 6482 downrated | 1 |
wiki_physical_science |
52.19 | 1390 | 50% | 2780 downrated | 1 |
wiki_history |
36.75 | 1782 | 50% | 3564 downrated | 1 |
early_modern_science |
19.95 | 2584 | 50% | 5168 downrated | 1 |
religious_translated |
25.50 | 1871 | 50% | 3742 downrated | 1 |
cooking |
969.86 | 81 | 50% | 162 downrated | 1 |
legal_scotus |
44.45 | 1422 | 50% | 2844 downrated | 1 |
eu_parliament_debates |
44.09 | 1329 | 50% | 2658 downrated | 1 |
openstax_science |
20.95 | 2937 | 50% | 5874 downrated | 1 |
openstax_society |
36.06 | 1915 | 50% | 3830 downrated | 1 |
wpa_life_histories |
28.47 | 1627 | 50% | 3254 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.