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: 309 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cambridge_yle Starters (1 of 3) 325
cefr A1 (1 of 6) 800

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 1489.54 155 97% 78 5
20th_books 1732.44 153 97% 72 5
wiki_math 19.06 3705 97% 3816 downrated 1
wiki_geography 0.00 — — — 0
wiki_biology 0.00 — — — 0
wiki_modern_life 0.00 — — — 0
wiki_arts 397.00 954 97% 345 4
wiki_society 197.08 1719 100% 704 4
wiki_linguistics 57.66 3354 97% 1795 2
wiki_physical_science 0.00 — — — 0
wiki_history 276.82 738 100% 469 4
early_modern_science 437.51 569 97% 248 4
religious_translated 636.84 330 97% 166 5
cooking 154.21 982 97% 692 2
legal_scotus 210.31 1330 100% 569 4
eu_parliament_debates 252.02 833 97% 427 4
openstax_science 82.72 2531 97% 1511 2
openstax_society 225.08 1339 97% 588 4
wpa_life_histories 2153.09 132 100% 60 5

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.