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: 503 (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 36.00 3090 100% 2140 2
20th_books 34.50 3449 100% 2153 2
wiki_math 218.27 1280 100% 482 4
wiki_geography 899.75 131 100% 116 3
wiki_biology 184.73 993 100% 750 2
wiki_modern_life 220.27 716 100% 609 2
wiki_arts 297.66 560 100% 426 3
wiki_society 542.58 269 100% 210 3
wiki_linguistics 261.72 669 100% 477 3
wiki_physical_science 146.84 1271 100% 961 2
wiki_history 616.82 229 100% 176 3
early_modern_science 107.83 1428 100% 1034 2
religious_translated 91.17 1406 100% 1063 2
cooking 0.00 — — — 0
legal_scotus 669.90 370 100% 184 4
eu_parliament_debates 436.01 738 100% 264 4
openstax_science 145.04 1898 100% 878 3
openstax_society 462.56 487 100% 292 3
wpa_life_histories 94.11 1388 100% 937 3

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.