Base Difficulty

Base difficulty: Level 274 edit

Level distribution for noun (financial_ledger_entry): 20: 1 224: 1 270: 1 274: 5 275: 1 276: 2 299: 1 300: 6 380: 1 440: 1 1399: 18

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: 1991 (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 24.79 2758 80% 3447 downrated 1
20th_books 23.39 2848 80% 3560 downrated 1
wiki_math 13.86 3976 80% 4970 downrated 1
wiki_geography 34.05 3218 80% 4022 downrated 1
wiki_biology 106.80 1550 80% 1296 2
wiki_modern_life 60.29 1967 80% 2459 downrated 1
wiki_arts 33.30 3267 80% 4084 downrated 1
wiki_society 105.12 1031 80% 1289 downrated 1
wiki_linguistics 23.22 3552 80% 4440 downrated 1
wiki_physical_science 0.00 — — — 0
wiki_history 32.05 3348 80% 4185 downrated 1
early_modern_science 42.83 2090 80% 2612 downrated 1
religious_translated 0.00 — — — 0
cooking 600.38 220 80% 275 downrated 1
legal_scotus 24.12 3455 80% 4319 downrated 1
eu_parliament_debates 71.39 2037 80% 1399 2
openstax_science 20.28 4308 80% 5385 downrated 1
openstax_society 102.51 1338 80% 1301 2
wpa_life_histories 126.56 673 80% 841 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.