Base Difficulty

Base difficulty: Level 1399 edit

Level distribution for noun (communication_information): 5: 1 19: 6 295: 28 370: 1 400: 36 420: 1 440: 32 460: 1 470: 2 1000: 8 1040: 1 1060: 2 1070: 10 1080: 1 1110: 16 1120: 2 1207: 1 1220: 1 1399: 83

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: 4955 (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 10.86 1422 14% 8215 downrated 2
20th_books 5.42 2631 14% 14604 downrated 2
wiki_math 10.24 2029 14% 8000 capped 2
wiki_geography 33.53 721 14% 3960 downrated 2
wiki_biology 40.97 626 14% 3258 downrated 2
wiki_modern_life 45.14 548 14% 2805 downrated 2
wiki_arts 58.31 417 14% 2004 downrated 2
wiki_society 30.79 907 14% 4392 downrated 2
wiki_linguistics 93.09 231 14% 1331 downrated 2
wiki_physical_science 37.06 738 14% 3919 downrated 2
wiki_history 21.53 1241 14% 6228 downrated 2
early_modern_science 17.68 1282 14% 6568 downrated 2
religious_translated 2.15 4909 14% 10400 capped 1
cooking 0.00 — — — 0
legal_scotus 7.87 3048 14% 13817 downrated 2
eu_parliament_debates 5.13 3370 14% 11000 capped 2
openstax_science 39.21 632 14% 3535 downrated 2
openstax_society 27.06 1100 8% 5237 downrated 2
wpa_life_histories 4.32 3365 14% 16612 downrated 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.