Base Difficulty

Base difficulty: Level 370 edit

Level distribution for noun (quality_attribute): 370: 12 405: 3 450: 1 456: 1 1000: 2 1030: 1 1040: 2 1050: 1 1070: 4 1120: 2 1399: 50

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: 2129 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
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 85.90 697 57% 1076 downrated 2
20th_books 52.89 1154 57% 1727 downrated 2
wiki_math 13.20 3275 57% 5731 downrated 1
wiki_geography 20.75 3750 57% 6563 downrated 1
wiki_biology 125.56 591 57% 1034 downrated 1
wiki_modern_life 61.83 1370 57% 2398 downrated 1
wiki_arts 109.31 834 57% 1201 downrated 2
wiki_society 40.32 1987 57% 3477 downrated 1
wiki_linguistics 30.40 2274 57% 3980 downrated 1
wiki_physical_science 71.86 1155 57% 2021 downrated 1
wiki_history 77.13 1375 57% 1720 downrated 2
early_modern_science 165.11 419 57% 650 downrated 2
religious_translated 50.88 1151 57% 2014 downrated 1
cooking 86.93 808 57% 1414 downrated 1
legal_scotus 24.05 2709 57% 4741 downrated 1
eu_parliament_debates 0.00 — — — 0
openstax_science 56.52 1391 57% 2434 downrated 1
openstax_society 23.15 3066 57% 5366 downrated 1
wpa_life_histories 25.99 2023 57% 3540 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.