Base Difficulty

Base difficulty: Level 10 edit

Level distribution for verb (communication): 10: 2 11: 1 29: 1 119: 2 140: 1 185: 1 196: 1 215: 1 230: 1 295: 2 300: 1 310: 3 329: 1 400: 1 415: 4 455: 2 460: 2 475: 4 480: 52 485: 5 1000: 2 1060: 1 1070: 2 1120: 2 1399: 73

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: 280 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cambridge_yle Flyers (3 of 3) 1200
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 929.24 282 100% 110 6
20th_books 804.34 358 100% 128 5
wiki_math 118.95 1230 100% 939 2
wiki_geography 499.75 559 100% 262 4
wiki_biology 33.92 3706 100% 3706 1
wiki_modern_life 59.25 2481 100% 2481 1
wiki_arts 243.48 1291 100% 563 4
wiki_society 266.16 1124 100% 518 4
wiki_linguistics 3536.23 43 100% 30 5
wiki_physical_science 39.66 3261 100% 3261 1
wiki_history 308.34 1178 100% 434 4
early_modern_science 290.46 853 100% 378 5
religious_translated 1000.15 280 100% 109 6
cooking 28.17 2525 100% 2525 1
legal_scotus 202.18 1578 100% 558 5
eu_parliament_debates 392.14 765 100% 285 5
openstax_science 22.86 4666 100% 4666 1
openstax_society 225.28 1751 100% 587 4
wpa_life_histories 293.32 952 100% 330 5

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.