Base Difficulty

Base difficulty: Level 215 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: 2001 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr B1 (3 of 6) 4200

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 54.46 2565 100% 1424 3
20th_books 58.89 1752 100% 1398 2
wiki_math 23.10 3274 100% 3274 1
wiki_geography 138.04 983 100% 983 1
wiki_biology 0.00 — — — 0
wiki_modern_life 95.54 1538 100% 1538 1
wiki_arts 108.03 1275 100% 1275 1
wiki_society 122.20 1129 100% 1129 1
wiki_linguistics 25.80 3806 100% 3806 1
wiki_physical_science 57.73 2421 100% 2421 1
wiki_history 153.44 847 100% 847 1
early_modern_science 20.88 4382 100% 4382 1
religious_translated 31.55 4655 100% 2377 2
cooking 0.00 — — — 0
legal_scotus 126.29 1984 100% 842 4
eu_parliament_debates 70.33 1845 100% 1344 2
openstax_science 0.00 — — — 0
openstax_society 44.64 2850 100% 2850 1
wpa_life_histories 16.58 4487 100% 4487 1

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.