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: 2435 (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 55.46 1887 66% 1517 3
20th_books 47.86 1518 66% 1814 downrated 2
wiki_math 0.00 — — — 0
wiki_geography 132.67 631 66% 951 downrated 1
wiki_biology 17.47 4428 66% 6675 downrated 1
wiki_modern_life 23.64 3916 66% 5903 downrated 1
wiki_arts 34.19 2683 66% 4045 downrated 1
wiki_society 63.94 1476 66% 2225 downrated 1
wiki_linguistics 25.31 2920 66% 4402 downrated 1
wiki_physical_science 0.00 — — — 0
wiki_history 157.97 583 66% 777 downrated 2
early_modern_science 25.69 4648 66% 3504 2
religious_translated 117.74 1135 66% 871 2
cooking 0.00 — — — 0
legal_scotus 71.02 2310 66% 1413 4
eu_parliament_debates 36.72 2565 66% 2318 2
openstax_science 0.00 — — — 0
openstax_society 91.04 1546 66% 1390 3
wpa_life_histories 30.62 3367 66% 2404 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.