Base Difficulty

Base difficulty: Level 1399 edit

Level distribution for noun (human): 5: 9 19: 1 310: 45 330: 2 340: 1 370: 1 390: 1 400: 2 405: 1 1000: 4 1010: 1 1020: 3 1030: 2 1040: 5 1050: 1 1060: 8 1070: 8 1120: 7 1130: 5 1399: 66

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: 1937 (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 15.74 4357 20% 4468 downrated 2
20th_books 29.28 3131 100% 2734 2
wiki_math 64.95 455 20% 1994 downrated 2
wiki_geography 44.42 805 20% 3026 downrated 2
wiki_biology 83.87 572 20% 1508 downrated 3
wiki_modern_life 67.00 1191 20% 2112 downrated 3
wiki_arts 180.80 1057 20% 752 4
wiki_society 94.25 859 20% 1454 downrated 3
wiki_linguistics 124.07 358 20% 978 downrated 3
wiki_physical_science 155.41 691 20% 930 downrated 3
wiki_history 91.90 1174 20% 1473 downrated 3
early_modern_science 36.28 601 20% 3005 downrated 1
religious_translated 14.23 1449 20% 7245 downrated 1
cooking 5.41 2580 20% 5200 capped 1
legal_scotus 88.50 1613 100% 1403 3
eu_parliament_debates 66.77 1479 20% 1592 downrated 2
openstax_science 80.99 1385 20% 1605 downrated 3
openstax_society 114.73 1937 20% 1128 4
wpa_life_histories 25.26 1852 20% 2966 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.