Base Difficulty

Base difficulty: Level 105 edit

Level distribution for adverb (style): 6: 1 19: 4 20: 4 105: 46 1080: 1 1202: 1 1399: 2

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: 1792 (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 114.70 827 100% 827 1
20th_books 115.04 864 100% 864 1
wiki_math 32.25 2719 100% 2719 1
wiki_geography 0.00 — — — 0
wiki_biology 0.00 — — — 0
wiki_modern_life 32.49 4247 100% 4247 1
wiki_arts 57.28 2419 100% 2419 1
wiki_society 85.11 1675 100% 1675 1
wiki_linguistics 45.91 2556 100% 2556 1
wiki_physical_science 31.48 3857 100% 3857 1
wiki_history 57.20 2391 100% 2391 1
early_modern_science 161.67 689 100% 689 1
religious_translated 62.07 1635 100% 1635 1
cooking 40.56 2021 100% 2021 1
legal_scotus 275.77 450 100% 450 1
eu_parliament_debates 84.84 1363 100% 1363 1
openstax_science 19.52 5160 100% 5160 1
openstax_society 37.17 3273 100% 3273 1
wpa_life_histories 17.84 3947 100% 3947 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.