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 33.51 2514 100% 2514 1
20th_books 79.68 1347 100% 1069 2
wiki_math 0.00 — — — 0
wiki_geography 379.13 615 100% 323 2
wiki_biology 76.79 2662 100% 1658 2
wiki_modern_life 38.18 3652 100% 3652 1
wiki_arts 28.26 4249 100% 4249 1
wiki_society 22.97 5074 100% 5074 1
wiki_linguistics 85.96 2174 100% 1251 2
wiki_physical_science 124.11 1859 100% 1108 2
wiki_history 123.49 1925 100% 1043 2
early_modern_science 124.24 1053 100% 875 2
religious_translated 70.79 1414 100% 1414 1
cooking 0.00 — — — 0
legal_scotus 12.79 5678 100% 5678 1
eu_parliament_debates 0.00 — — — 0
openstax_science 0.00 — — — 0
openstax_society 73.44 2861 100% 1664 2
wpa_life_histories 115.99 1603 100% 803 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.