Base Difficulty

Base difficulty: Level 360 edit

Level distribution for adjective (purpose): 350: 1 360: 11 390: 1 400: 1 1000: 1 1010: 1 1020: 1 1040: 4 1060: 2 1070: 4 1078: 1 1120: 14 1399: 23

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: 2982 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr B1 (3 of 6) 4200

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 3.05 8358 44% 18806 downrated 1
20th_books 6.26 4925 44% 11081 downrated 1
wiki_math 0.00 — — — 0
wiki_geography 140.89 376 44% 846 downrated 1
wiki_biology 100.38 571 44% 1285 downrated 1
wiki_modern_life 145.61 328 44% 738 downrated 1
wiki_arts 74.88 768 44% 1728 downrated 1
wiki_society 46.61 1342 44% 3020 downrated 1
wiki_linguistics 16.24 2998 44% 6746 downrated 1
wiki_physical_science 55.45 1171 44% 2635 downrated 1
wiki_history 47.46 1248 44% 2808 downrated 1
early_modern_science 8.44 4731 44% 10400 capped 1
religious_translated 0.00 — — — 0
cooking 13.02 2431 44% 5200 capped 1
legal_scotus 63.86 905 44% 2036 downrated 1
eu_parliament_debates 41.55 1264 44% 2844 downrated 1
openstax_science 14.41 3596 44% 8091 downrated 1
openstax_society 31.05 1961 44% 4412 downrated 1
wpa_life_histories 4.48 6453 44% 14519 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.