Base Difficulty

Base difficulty: Level 1399 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: 1897 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Extended (2 of 2) 1600
cefr A2 (2 of 6) 2100

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 23.20 1432 36% 3938 downrated 1
20th_books 8.64 3360 36% 9240 downrated 1
wiki_math 11.31 2753 36% 7571 downrated 1
wiki_geography 452.79 83 36% 210 downrated 2
wiki_biology 0.00 — — — 0
wiki_modern_life 22.62 2356 36% 6479 downrated 1
wiki_arts 45.97 1484 36% 2956 downrated 2
wiki_society 94.51 443 36% 1218 downrated 1
wiki_linguistics 45.04 1041 36% 2863 downrated 1
wiki_physical_science 0.00 — — — 0
wiki_history 126.06 311 36% 855 downrated 1
early_modern_science 12.28 3063 36% 8423 downrated 1
religious_translated 25.24 1479 36% 4067 downrated 1
cooking 0.00 — — — 0
legal_scotus 63.35 750 36% 2062 downrated 1
eu_parliament_debates 41.89 1038 36% 2854 downrated 1
openstax_science 0.00 — — — 0
openstax_society 181.72 229 36% 630 downrated 1
wpa_life_histories 5.32 4572 36% 12573 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.