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: 386 (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 189.75 523 100% 523 1
20th_books 99.28 996 100% 996 1
wiki_math 480.43 282 100% 282 1
wiki_geography 105.83 1300 100% 1300 1
wiki_biology 224.06 578 100% 578 1
wiki_modern_life 249.04 482 100% 482 1
wiki_arts 158.25 829 100% 829 1
wiki_society 303.48 374 100% 374 1
wiki_linguistics 281.07 468 100% 468 1
wiki_physical_science 451.06 277 100% 277 1
wiki_history 154.89 833 100% 833 1
early_modern_science 705.84 146 100% 146 1
religious_translated 1520.65 83 100% 83 1
cooking 151.00 817 100% 817 1
legal_scotus 518.71 209 100% 209 1
eu_parliament_debates 1382.41 82 100% 82 1
openstax_science 451.76 239 100% 239 1
openstax_society 208.34 676 100% 676 1
wpa_life_histories 39.89 2251 100% 2251 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.