Base Difficulty

Base difficulty: Level 1399 edit

Level distribution for noun (collection_things): 278: 1 405: 1 450: 1 460: 9 1000: 5 1010: 1 1030: 1 1050: 3 1060: 1 1078: 2 1080: 1 1120: 1 1205: 3 1211: 1 1214: 1 1220: 3 1223: 2 1399: 33

Per-Language Difficulty Overrides

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

Add Difficulty Override
-1 to exclude, 1-1399 for level
Frequency and Tier Signals
Combined Frequency Rank: 2198 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr B2 (4 of 6) 6900

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 3.34 7868 44% 17703 downrated 1
20th_books 4.58 6153 44% 13844 downrated 1
wiki_math 0.00 — — — 0
wiki_geography 17.95 3371 44% 7585 downrated 1
wiki_biology 13.53 3985 44% 8966 downrated 1
wiki_modern_life 27.74 2350 44% 5288 downrated 1
wiki_arts 16.15 3684 44% 8289 downrated 1
wiki_society 10.71 5172 44% 11000 capped 1
wiki_linguistics 10.44 4080 44% 9000 capped 1
wiki_physical_science 17.77 3240 44% 7290 downrated 1
wiki_history 0.00 — — — 0
early_modern_science 9.45 4343 44% 9772 downrated 1
religious_translated 0.00 — — — 0
cooking 1039.43 61 44% 137 downrated 1
legal_scotus 3.87 7448 44% 16758 downrated 1
eu_parliament_debates 5.05 5246 44% 11000 capped 1
openstax_science 10.71 4447 44% 10006 downrated 1
openstax_society 9.36 5044 44% 11000 capped 1
wpa_life_histories 10.57 3167 44% 7126 downrated 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.