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: 1500 (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 34.28 2548 100% 2548 1
20th_books 90.86 1069 100% 1069 1
wiki_math 63.34 1726 100% 1726 1
wiki_geography 81.73 1739 100% 1739 1
wiki_biology 175.49 773 100% 773 1
wiki_modern_life 139.81 1011 100% 1011 1
wiki_arts 97.21 1429 100% 1429 1
wiki_society 33.41 4048 100% 4048 1
wiki_linguistics 116.92 1115 100% 1115 1
wiki_physical_science 197.14 731 100% 731 1
wiki_history 30.66 4213 100% 4213 1
early_modern_science 83.49 1400 100% 1400 1
religious_translated 0.00 — — — 0
cooking 532.86 291 100% 291 1
legal_scotus 13.96 5682 100% 5682 1
eu_parliament_debates 31.54 2830 100% 2830 1
openstax_science 153.67 932 100% 932 1
openstax_society 64.84 2123 100% 2123 1
wpa_life_histories 20.59 3551 100% 3551 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.