Base difficulty: Level 135 edit
Level distribution for noun (natural_feature): 10: 2 11: 1 135: 25 165: 1 219: 26 254: 1 330: 1 1010: 1 1020: 7 1050: 9 1221: 1 1399: 6
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 |
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 |
24.00 | 3415 | 100% | 3415 | 1 |
20th_books |
36.39 | 2324 | 100% | 2324 | 1 |
wiki_math |
161.23 | 845 | 100% | 845 | 1 |
wiki_geography |
40.22 | 3390 | 100% | 3390 | 1 |
wiki_biology |
0.00 | — | — | — | 0 |
wiki_modern_life |
35.70 | 3916 | 100% | 3916 | 1 |
wiki_arts |
0.00 | — | — | — | 0 |
wiki_society |
0.00 | — | — | — | 0 |
wiki_linguistics |
0.00 | — | — | — | 0 |
wiki_physical_science |
73.96 | 1952 | 100% | 1952 | 1 |
wiki_history |
0.00 | — | — | — | 0 |
early_modern_science |
30.74 | 3303 | 100% | 3303 | 1 |
religious_translated |
0.00 | — | — | — | 0 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
0.00 | — | — | — | 0 |
eu_parliament_debates |
0.00 | — | — | — | 0 |
openstax_science |
57.73 | 2263 | 100% | 2263 | 1 |
openstax_society |
27.26 | 4197 | 100% | 4197 | 1 |
wpa_life_histories |
7.09 | 7740 | 100% | 7740 | 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.