Base Difficulty

Base difficulty: Level 1399 edit

Level distribution for verb (creation_action): 7: 1 10: 1 205: 1 260: 1 295: 1 330: 3 380: 1 400: 1 415: 1 455: 1 470: 12 475: 7 485: 1 1000: 1 1010: 1 1040: 1 1070: 1 1110: 2 1120: 1 1399: 31

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: 5393 (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 9.73 2551 20% 7807 downrated 3
20th_books 7.99 2487 20% 9628 downrated 2
wiki_math 9.44 3102 20% 8000 capped 2
wiki_geography 7.26 3735 20% 9000 capped 1
wiki_biology 14.40 1902 20% 9000 capped 1
wiki_modern_life 7.61 3719 20% 10000 capped 1
wiki_arts 14.40 3512 20% 9264 downrated 2
wiki_society 21.73 2282 20% 6087 downrated 3
wiki_linguistics 9.50 2482 20% 9000 capped 1
wiki_physical_science 11.29 2478 20% 8000 capped 1
wiki_history 19.31 1375 20% 6875 downrated 1
early_modern_science 21.25 1475 20% 5232 downrated 2
religious_translated 3.64 4325 20% 10400 capped 1
cooking 0.00 — — — 0
legal_scotus 166.23 313 20% 746 downrated 4
eu_parliament_debates 41.41 995 20% 2671 downrated 3
openstax_science 8.39 4748 20% 11000 capped 2
openstax_society 7.27 3336 20% 11000 capped 1
wpa_life_histories 2.42 5246 20% 20000 capped 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.