Base Difficulty

Base difficulty: Level 475 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: 704 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr A2 (2 of 6) 2100

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 29.98 3636 67% 2451 3
20th_books 18.93 4505 67% 3680 2
wiki_math 574.36 289 67% 235 4
wiki_geography 37.91 2444 67% 3666 downrated 1
wiki_biology 70.48 1321 67% 1982 downrated 1
wiki_modern_life 303.86 388 67% 404 downrated 4
wiki_arts 138.98 753 67% 937 downrated 2
wiki_society 252.42 704 67% 531 4
wiki_linguistics 234.67 772 67% 540 4
wiki_physical_science 308.74 438 67% 437 4
wiki_history 61.68 1442 67% 2163 downrated 1
early_modern_science 184.02 815 67% 602 4
religious_translated 61.04 1788 67% 1472 3
cooking 71.37 1460 67% 1278 2
legal_scotus 907.41 227 67% 130 5
eu_parliament_debates 358.46 602 67% 330 4
openstax_science 225.25 775 67% 602 4
openstax_society 168.10 1484 67% 790 4
wpa_life_histories 16.43 4375 67% 4221 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.