Base Difficulty

Base difficulty: Level 20 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: 762 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cefr A1 (1 of 6) 800

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 45.76 2195 100% 1797 2
20th_books 45.22 2321 100% 1735 2
wiki_math 58.90 1819 100% 1819 1
wiki_geography 100.08 2251 100% 1388 2
wiki_biology 76.85 3004 100% 1687 2
wiki_modern_life 169.39 1397 100% 869 2
wiki_arts 76.32 2962 100% 1763 2
wiki_society 373.51 453 100% 325 2
wiki_linguistics 0.00 — — — 0
wiki_physical_science 48.70 2769 100% 2769 1
wiki_history 92.73 2613 100% 1458 2
early_modern_science 52.78 2115 100% 2115 1
religious_translated 36.97 2524 100% 2524 1
cooking 80.01 1333 100% 1333 1
legal_scotus 212.50 919 100% 608 2
eu_parliament_debates 273.15 820 100% 437 2
openstax_science 0.00 — — — 0
openstax_society 1250.02 118 100% 86 2
wpa_life_histories 136.91 1114 100% 717 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.