Base Difficulty

Base difficulty: Level 480 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: 969 (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 139.51 1336 100% 640 3
20th_books 89.39 1907 100% 976 2
wiki_math 84.31 1407 100% 1407 1
wiki_geography 111.59 1771 100% 1246 2
wiki_biology 73.60 1861 100% 1861 1
wiki_modern_life 89.31 2556 100% 1604 2
wiki_arts 203.51 1351 100% 677 3
wiki_society 232.91 1065 100% 592 3
wiki_linguistics 105.87 1594 100% 1125 2
wiki_physical_science 53.72 2581 100% 2581 1
wiki_history 263.13 1017 100% 513 3
early_modern_science 284.00 674 100% 390 3
religious_translated 135.50 1191 100% 741 2
cooking 66.48 1490 100% 1490 1
legal_scotus 159.88 1813 100% 710 4
eu_parliament_debates 479.25 425 100% 241 4
openstax_science 56.94 2290 100% 2290 1
openstax_society 50.43 2608 100% 2608 1
wpa_life_histories 85.60 1981 100% 1069 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.