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: 895 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr B1 (3 of 6) 4200

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 4.81 6199 44% 13948 downrated 1
20th_books 13.87 4357 44% 4747 downrated 2
wiki_math 371.31 165 44% 338 downrated 2
wiki_geography 83.83 1510 44% 1668 downrated 2
wiki_biology 25.34 2408 44% 5418 downrated 1
wiki_modern_life 353.35 212 44% 306 downrated 2
wiki_arts 133.03 644 44% 988 downrated 2
wiki_society 164.32 809 44% 828 downrated 2
wiki_linguistics 570.96 98 44% 194 downrated 2
wiki_physical_science 214.93 363 44% 626 downrated 2
wiki_history 81.02 1433 44% 1663 downrated 2
early_modern_science 18.73 2563 44% 5767 downrated 1
religious_translated 6.62 4964 44% 10400 capped 1
cooking 12.52 2529 44% 5200 capped 1
legal_scotus 482.58 183 44% 227 downrated 3
eu_parliament_debates 278.00 414 80% 441 downrated 2
openstax_science 165.94 546 44% 822 downrated 2
openstax_society 132.64 1118 44% 1059 2
wpa_life_histories 13.19 4153 44% 5146 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.