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: 5359 (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 10.80 6752 17% 5881 2
20th_books 7.84 5583 17% 7063 downrated 2
wiki_math 0.00 — — — 0
wiki_geography 0.00 — — — 0
wiki_biology 5.23 3883 17% 9000 capped 1
wiki_modern_life 9.96 2437 17% 10000 capped 1
wiki_arts 7.98 2856 17% 10000 capped 1
wiki_society 27.30 1255 17% 5116 downrated 2
wiki_linguistics 47.52 2484 100% 2484 1
wiki_physical_science 0.00 — — — 0
wiki_history 12.97 1743 17% 9000 capped 1
early_modern_science 18.60 4814 100% 4814 1
religious_translated 3.14 4200 17% 10400 capped 1
cooking 0.00 — — — 0
legal_scotus 74.75 597 17% 1397 downrated 4
eu_parliament_debates 30.81 1795 17% 2668 downrated 3
openstax_science 41.44 1759 17% 2785 downrated 3
openstax_society 15.00 2306 17% 8548 downrated 2
wpa_life_histories 15.14 2525 17% 4219 downrated 3

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.