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: 2240 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Extended (2 of 2) 1600
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 42.59 3265 100% 1864 2
20th_books 63.31 2022 100% 1312 2
wiki_math 0.00 — — — 0
wiki_geography 0.00 — — — 0
wiki_biology 216.67 1288 100% 640 3
wiki_modern_life 0.00 — — — 0
wiki_arts 0.00 — — — 0
wiki_society 25.32 4964 100% 4964 1
wiki_linguistics 0.00 — — — 0
wiki_physical_science 0.00 — — — 0
wiki_history 33.65 3902 100% 3902 1
early_modern_science 19.73 4575 100% 4575 1
religious_translated 0.00 — — — 0
cooking 28.16 2487 100% 2487 1
legal_scotus 142.84 1218 100% 817 3
eu_parliament_debates 17.52 4047 100% 4047 1
openstax_science 0.00 — — — 0
openstax_society 143.31 1540 100% 949 2
wpa_life_histories 186.45 795 100% 529 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.