Base Difficulty

Base difficulty: Level 1399 edit

Level distribution for noun (creative_work): 330: 15 1399: 17

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: 4338 (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 2.88 7596 36% 20000 capped 1
20th_books 3.06 7055 36% 19401 downrated 1
wiki_math 56.54 874 36% 2404 downrated 1
wiki_geography 14.45 3423 36% 9000 capped 1
wiki_biology 23.83 2080 36% 5720 downrated 1
wiki_modern_life 26.97 1996 36% 5489 downrated 1
wiki_arts 125.68 600 36% 1027 downrated 2
wiki_society 12.15 4041 36% 11000 capped 1
wiki_linguistics 13.40 2979 36% 8192 downrated 1
wiki_physical_science 107.58 521 36% 1266 downrated 2
wiki_history 49.69 1817 36% 2750 downrated 2
early_modern_science 31.19 1346 36% 3702 downrated 1
religious_translated 13.85 2449 36% 6735 downrated 1
cooking 24.58 1462 36% 4021 downrated 1
legal_scotus 10.96 3445 36% 9474 downrated 1
eu_parliament_debates 6.60 3961 36% 10893 downrated 1
openstax_science 49.24 1045 36% 2874 downrated 1
openstax_society 7.66 5018 36% 11000 capped 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.