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: 2366 (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 10.18 5321 40% 6876 downrated 2
20th_books 8.92 5748 40% 7273 downrated 2
wiki_math 0.00 — — — 0
wiki_geography 99.59 1518 40% 1404 4
wiki_biology 74.90 1399 40% 1831 downrated 3
wiki_modern_life 114.04 1060 40% 1259 downrated 4
wiki_arts 33.30 3192 40% 4074 downrated 2
wiki_society 115.73 1165 40% 1199 downrated 4
wiki_linguistics 46.22 2581 40% 2439 3
wiki_physical_science 65.86 1665 40% 2081 downrated 3
wiki_history 88.42 1192 40% 1510 downrated 3
early_modern_science 24.91 3159 40% 4078 downrated 2
religious_translated 30.04 2656 40% 2855 downrated 3
cooking 0.00 — — — 0
legal_scotus 86.54 1535 40% 1386 4
eu_parliament_debates 88.90 1107 40% 1202 downrated 4
openstax_science 153.77 700 40% 890 downrated 4
openstax_society 121.20 814 40% 1150 downrated 3
wpa_life_histories 7.80 6204 40% 8339 downrated 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.