Base Difficulty

Base difficulty: Level 7 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: 161 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cambridge_yle Starters (1 of 3) 325
cefr A1 (1 of 6) 800

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 294.45 438 100% 332 3
20th_books 230.32 568 100% 426 3
wiki_math 470.04 756 100% 271 4
wiki_geography 88.41 1614 100% 1614 1
wiki_biology 175.71 1269 100% 759 3
wiki_modern_life 532.00 338 100% 227 4
wiki_arts 373.65 536 100% 341 4
wiki_society 197.36 1234 100% 684 4
wiki_linguistics 557.84 463 100% 231 4
wiki_physical_science 318.78 762 100% 448 3
wiki_history 149.03 1171 100% 885 2
early_modern_science 312.10 921 100% 360 4
religious_translated 157.17 1174 100% 621 3
cooking 8998.88 13 100% 12 4
legal_scotus 591.17 247 100% 193 4
eu_parliament_debates 267.73 889 100% 409 4
openstax_science 419.34 874 100% 331 4
openstax_society 167.83 1735 100% 783 3
wpa_life_histories 114.73 1698 100% 755 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.