Base Difficulty

Base difficulty: Level 135 edit

Level distribution for noun (natural_feature): 10: 2 11: 1 135: 32 219: 33 330: 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
Source Tier Rank used
cambridge_yle Movers (2 of 3) 750

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 97.39 959 100% 959 1
20th_books 95.94 999 100% 999 1
wiki_math 1387.74 84 100% 84 1
wiki_geography 128.06 1014 100% 1014 1
wiki_biology 147.01 924 100% 924 1
wiki_modern_life 465.72 202 100% 202 1
wiki_arts 142.87 892 100% 892 1
wiki_society 255.74 436 100% 436 1
wiki_linguistics 169.54 743 100% 743 1
wiki_physical_science 1190.79 73 100% 73 1
wiki_history 212.40 518 100% 518 1
early_modern_science 123.14 906 100% 906 1
religious_translated 151.43 708 100% 708 1
cooking 0.00 — — — 0
legal_scotus 50.59 2245 100% 2245 1
eu_parliament_debates 262.51 472 100% 472 1
openstax_science 563.31 187 100% 187 1
openstax_society 182.97 780 100% 780 1
wpa_life_histories 0.00 — — — 0

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.