Base Difficulty

Base difficulty: Level 1399 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: 3296 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr C1 (5 of 6) 12000

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 4.14 3506 8% 18222 downrated 3
20th_books 4.43 3002 8% 15782 downrated 4
wiki_math 100.77 343 8% 1386 downrated 4
wiki_geography 26.82 1065 8% 5159 downrated 4
wiki_biology 19.64 1502 8% 6897 downrated 4
wiki_modern_life 19.24 2214 8% 7650 downrated 4
wiki_arts 164.96 975 8% 816 7
wiki_society 90.43 961 8% 1537 downrated 5
wiki_linguistics 76.30 367 8% 1715 downrated 4
wiki_physical_science 29.65 1274 8% 4880 downrated 4
wiki_history 127.98 1215 100% 1040 5
early_modern_science 26.34 812 8% 4269 downrated 4
religious_translated 6.72 2815 8% 10400 capped 3
cooking 2.53 2399 8% 5200 capped 1
legal_scotus 15.71 1875 8% 7394 downrated 4
eu_parliament_debates 24.97 1095 8% 4522 downrated 4
openstax_science 38.42 945 8% 3648 downrated 4
openstax_society 52.31 1052 8% 2362 downrated 5
wpa_life_histories 1.56 5406 8% 20000 capped 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.