Base Difficulty

Base difficulty: Level 475 edit

Level distribution for verb (physical_action): 5: 8 7: 3 8: 4 10: 5 11: 1 12: 1 19: 1 22: 1 23: 1 24: 2 25: 5 27: 3 28: 2 29: 4 109: 2 135: 1 140: 3 160: 3 165: 1 170: 1 172: 1 179: 2 185: 1 190: 2 194: 1 196: 1 204: 5 205: 3 215: 1 235: 1 254: 1 278: 4 279: 4 299: 1 300: 1 309: 2 311: 1 314: 2 319: 41 330: 3 340: 1 370: 1 400: 1 405: 4 406: 3 410: 2 415: 8 455: 1 475: 9 485: 1 1020: 1 1040: 3 1070: 3 1078: 10 1090: 12 1110: 1 1120: 2 1201: 1 1205: 1 1210: 1 1221: 1 1399: 72

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: 2186 (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 15.77 3130 40% 4546 downrated 3
20th_books 13.46 3706 40% 4941 downrated 3
wiki_math 175.54 495 40% 692 downrated 4
wiki_geography 129.89 1298 40% 1070 4
wiki_biology 100.30 1890 40% 1355 4
wiki_modern_life 89.83 1250 40% 1594 downrated 4
wiki_arts 56.96 1242 40% 2401 downrated 2
wiki_society 47.54 1652 40% 2947 downrated 2
wiki_linguistics 32.68 1566 40% 3915 downrated 1
wiki_physical_science 93.17 1463 40% 1480 downrated 4
wiki_history 49.44 1051 40% 2627 downrated 1
early_modern_science 100.84 1420 40% 1135 4
religious_translated 14.09 4204 40% 5528 downrated 2
cooking 0.00 — — — 0
legal_scotus 106.62 1287 40% 1170 4
eu_parliament_debates 84.06 1372 40% 1255 4
openstax_science 95.92 1664 40% 1374 4
openstax_society 71.59 1194 40% 1845 downrated 3
wpa_life_histories 16.94 3458 40% 4253 downrated 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.