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: 613 (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 11.60 6951 80% 5061 2
20th_books 0.00 — — — 0
wiki_math 1934.66 67 80% 61 4
wiki_geography 148.43 1010 80% 922 2
wiki_biology 80.53 1392 80% 1740 downrated 1
wiki_modern_life 239.94 611 80% 548 3
wiki_arts 207.47 930 80% 645 4
wiki_society 447.08 346 80% 275 4
wiki_linguistics 239.90 743 80% 515 4
wiki_physical_science 596.60 211 80% 200 4
wiki_history 49.03 2222 80% 2778 downrated 1
early_modern_science 42.83 2877 80% 2311 2
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 346.81 702 80% 373 4
eu_parliament_debates 114.32 1709 80% 890 3
openstax_science 318.52 636 80% 423 4
openstax_society 228.51 1053 80% 587 4
wpa_life_histories 0.00 — — — 0

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.