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: 331 (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 69.10 2644 100% 1105 4
20th_books 38.91 3517 100% 1771 3
wiki_math 168.61 1536 100% 626 3
wiki_geography 495.97 377 100% 255 3
wiki_biology 331.22 1168 100% 414 4
wiki_modern_life 784.69 365 100% 152 4
wiki_arts 1121.28 176 100% 95 4
wiki_society 722.43 295 100% 165 4
wiki_linguistics 449.28 523 100% 285 4
wiki_physical_science 663.92 492 100% 214 4
wiki_history 557.63 310 100% 209 3
early_modern_science 49.74 2229 100% 2229 1
religious_translated 364.29 329 100% 293 2
cooking 0.00 — — — 0
legal_scotus 507.38 727 100% 256 4
eu_parliament_debates 559.47 506 100% 208 5
openstax_science 657.48 597 100% 213 4
openstax_society 823.84 371 100% 158 4
wpa_life_histories 22.18 4861 100% 3062 2

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.