Base Difficulty

Base difficulty: Level 470 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: 1575 (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 0.00 — — — 0
20th_books 0.00 — — — 0
wiki_math 386.89 610 100% 315 4
wiki_geography 48.97 2801 100% 2801 1
wiki_biology 80.10 3184 100% 1636 2
wiki_modern_life 301.00 1294 100% 484 4
wiki_arts 43.94 3113 100% 3113 1
wiki_society 72.69 3460 100% 1876 2
wiki_linguistics 27.41 3668 100% 3668 1
wiki_physical_science 330.58 992 100% 429 4
wiki_history 0.00 — — — 0
early_modern_science 45.94 2401 100% 2401 1
religious_translated 14.71 4996 100% 4996 1
cooking 0.00 — — — 0
legal_scotus 60.72 3330 100% 1526 3
eu_parliament_debates 48.87 3786 100% 1419 3
openstax_science 367.81 971 100% 375 4
openstax_society 76.06 3181 100% 1605 2
wpa_life_histories 0.00 — — — 0

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.