Base Difficulty

Base difficulty: Level 11 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: 825 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cambridge_yle Movers (2 of 3) 750
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 293.88 340 50% 330 4
20th_books 242.81 383 50% 396 downrated 4
wiki_math 9.21 3799 50% 7598 downrated 1
wiki_geography 81.98 819 50% 1638 downrated 1
wiki_biology 129.47 849 50% 1045 downrated 2
wiki_modern_life 120.14 1372 50% 1188 3
wiki_arts 89.84 713 50% 1426 downrated 1
wiki_society 109.29 1169 50% 1208 downrated 3
wiki_linguistics 164.43 625 50% 733 downrated 3
wiki_physical_science 97.20 1451 50% 1441 2
wiki_history 213.74 342 50% 549 downrated 2
early_modern_science 171.35 767 50% 621 4
religious_translated 193.57 552 50% 532 3
cooking 58.58 1916 100% 1377 2
legal_scotus 80.12 2101 50% 1195 4
eu_parliament_debates 118.92 1344 50% 855 3
openstax_science 179.22 1231 50% 715 4
openstax_society 194.52 901 50% 704 3
wpa_life_histories 264.23 394 50% 379 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.