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 |
Extended (2 of 2) | 1600 |
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 |
41.93 | 2439 | 100% | 1925 | 2 |
20th_books |
58.26 | 2061 | 100% | 1405 | 2 |
wiki_math |
0.00 | — | — | — | 0 |
wiki_geography |
1442.55 | 123 | 100% | 70 | 2 |
wiki_biology |
61.96 | 2205 | 100% | 2205 | 1 |
wiki_modern_life |
38.26 | 3697 | 100% | 3697 | 1 |
wiki_arts |
40.26 | 3342 | 100% | 3342 | 1 |
wiki_society |
24.97 | 5006 | 100% | 5006 | 1 |
wiki_linguistics |
0.00 | 2970 | 100% | 2970 | 1 |
wiki_physical_science |
177.40 | 1266 | 100% | 819 | 2 |
wiki_history |
63.39 | 2169 | 100% | 2169 | 1 |
early_modern_science |
32.64 | 3146 | 100% | 3146 | 1 |
religious_translated |
53.18 | 1853 | 100% | 1853 | 1 |
cooking |
75.48 | 1375 | 100% | 1375 | 1 |
legal_scotus |
20.43 | 4473 | 100% | 4473 | 1 |
eu_parliament_debates |
0.00 | — | — | — | 0 |
openstax_science |
60.64 | 3229 | 100% | 1887 | 2 |
openstax_society |
24.37 | 4530 | 100% | 4530 | 1 |
wpa_life_histories |
106.61 | 1622 | 100% | 857 | 2 |
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.