Base Difficulty

Base difficulty: Level 415 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: 487 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600

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 185.16 1451 80% 438 9
20th_books 279.46 1277 100% 325 7
wiki_math 74.84 1603 80% 1333 2
wiki_geography 49.83 2256 80% 2820 downrated 1
wiki_biology 975.04 165 80% 119 6
wiki_modern_life 431.96 451 80% 301 6
wiki_arts 394.93 610 80% 335 6
wiki_society 72.01 2068 80% 1868 2
wiki_linguistics 44.71 3370 80% 2268 2
wiki_physical_science 781.09 183 80% 153 5
wiki_history 110.53 1502 80% 1224 2
early_modern_science 601.50 411 80% 180 7
religious_translated 95.85 2351 80% 915 4
cooking 401.60 497 80% 298 4
legal_scotus 32.54 2781 80% 3476 downrated 1
eu_parliament_debates 0.00 — — — 0
openstax_science 398.23 451 80% 334 3
openstax_society 118.22 1149 80% 1133 2
wpa_life_histories 221.03 767 100% 439 4

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.