Base Difficulty

Base difficulty: Level 275 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: 3736 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
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 24.86 556 11% 3899 downrated 2
20th_books 19.21 698 11% 5064 downrated 2
wiki_math 20.02 753 11% 6777 downrated 1
wiki_geography 16.12 1517 11% 8690 downrated 2
wiki_biology 6.49 2341 11% 9000 capped 1
wiki_modern_life 14.69 1090 11% 9810 downrated 1
wiki_arts 26.43 621 11% 4848 downrated 2
wiki_society 48.71 366 11% 2436 downrated 2
wiki_linguistics 8.06 1756 11% 9000 capped 1
wiki_physical_science 12.02 1356 11% 8000 capped 1
wiki_history 37.88 461 11% 3134 downrated 2
early_modern_science 17.21 722 11% 6498 downrated 1
religious_translated 2.41 3818 11% 10400 capped 1
cooking 0.00 — — — 0
legal_scotus 144.21 118 11% 773 downrated 2
eu_parliament_debates 66.22 406 11% 1864 downrated 2
openstax_science 12.88 1217 11% 10953 downrated 1
openstax_society 77.30 263 11% 1557 downrated 2
wpa_life_histories 20.91 707 11% 4880 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.