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: 1958 (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 2.40 5040 17% 20000 capped 1
20th_books 3.44 3747 17% 20000 capped 1
wiki_math 50.67 2013 100% 2013 1
wiki_geography 31.59 4210 100% 4210 1
wiki_biology 177.93 136 17% 611 downrated 2
wiki_modern_life 246.05 776 100% 567 2
wiki_arts 31.42 4176 100% 4176 1
wiki_society 110.96 1814 100% 1255 2
wiki_linguistics 67.27 1895 100% 1895 1
wiki_physical_science 108.77 1493 100% 1336 2
wiki_history 29.74 4339 100% 4339 1
early_modern_science 6.83 2637 17% 10400 capped 1
religious_translated 5.96 2589 17% 10400 capped 1
cooking 0.00 — — — 0
legal_scotus 39.25 3715 100% 2318 2
eu_parliament_debates 154.07 1434 100% 739 2
openstax_science 242.00 726 100% 568 3
openstax_society 67.73 2892 100% 1778 2
wpa_life_histories 11.67 5847 100% 5205 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.