Base Difficulty

Base difficulty: Level 1399 edit

Level distribution for noun (artwork_artifact): 25: 1 29: 1 205: 1 330: 30 360: 1 405: 2 1000: 39 1030: 1 1040: 2 1120: 2 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: 6862 (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 2.79 7130 17% 20000 capped 2
20th_books 1.82 5866 17% 20000 capped 1
wiki_math 0.00 — — — 0
wiki_geography 110.80 228 17% 1024 downrated 2
wiki_biology 5.43 3787 17% 9000 capped 1
wiki_modern_life 6.16 3802 17% 10000 capped 1
wiki_arts 5.18 4189 17% 10000 capped 1
wiki_society 13.07 3485 17% 10456 downrated 2
wiki_linguistics 17.44 1628 17% 6821 downrated 2
wiki_physical_science 0.00 — — — 0
wiki_history 28.41 1116 17% 4688 downrated 2
early_modern_science 8.73 3259 17% 10400 capped 2
religious_translated 13.05 2139 17% 7155 downrated 2
cooking 22.53 897 17% 5200 capped 1
legal_scotus 5.23 5092 17% 15823 downrated 2
eu_parliament_debates 39.41 900 17% 3023 downrated 2
openstax_science 6.71 4620 17% 11000 capped 2
openstax_society 22.78 1879 17% 6019 downrated 2
wpa_life_histories 4.92 3158 17% 13950 downrated 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.