Base Difficulty

Base difficulty: Level 135 edit

Level distribution for noun (natural_feature): 10: 2 11: 1 135: 25 165: 1 219: 26 330: 1 1010: 1 1020: 7 1050: 9 1221: 1

Per-Language Difficulty Overrides

No difficulty overrides set. The base difficulty level will be used for all languages.

Add Difficulty Override
-1 to exclude, 1-1299 for level
Frequency and Tier Signals
Combined Frequency Rank: — (run python -m storage.admin --calc-ranks to populate)
Tier Signals

No lemma-tier assignment found yet.

Corpus Frequency
Corpus Freq (per M) Best form Share Zipf rank Forms
19th_books 42.22 2381 100% 1853 2
20th_books 55.90 1998 100% 1392 2
wiki_math 0.00 — — — 0
wiki_geography 1316.30 155 100% 78 2
wiki_biology 60.13 2250 100% 2250 1
wiki_modern_life 58.79 4212 100% 2254 2
wiki_arts 39.50 3191 100% 3191 1
wiki_society 23.51 4989 100% 4989 1
wiki_linguistics 26.97 3459 100% 3459 1
wiki_physical_science 174.57 1233 100% 816 2
wiki_history 50.08 2549 100% 2549 1
early_modern_science 123.09 1318 100% 888 2
religious_translated 54.22 1763 100% 1763 1
cooking 77.09 1365 100% 1365 1
legal_scotus 19.50 5361 100% 3368 2
eu_parliament_debates 0.00 — — — 0
openstax_science 60.59 3251 100% 1880 2
openstax_society 24.75 4484 100% 4484 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.