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: 4472 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cambridge_yle Movers (2 of 3) 750
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 2.37 7388 17% 20000 capped 2
20th_books 2.52 6531 17% 20000 capped 2
wiki_math 13.63 2109 17% 6984 downrated 2
wiki_geography 26.27 1221 17% 5250 downrated 2
wiki_biology 0.00 — — — 0
wiki_modern_life 154.23 190 17% 637 downrated 3
wiki_arts 52.09 867 17% 2547 downrated 3
wiki_society 3.84 5352 17% 11000 capped 1
wiki_linguistics 0.00 — — — 0
wiki_physical_science 0.00 — — — 0
wiki_history 24.83 1738 17% 5515 downrated 2
early_modern_science 0.00 — — — 0
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 2.66 6638 17% 20000 capped 2
eu_parliament_debates 9.93 2208 17% 8976 downrated 2
openstax_science 3.46 4965 17% 11000 capped 1
openstax_society 10.05 3522 17% 11000 capped 2
wpa_life_histories 5.22 4039 17% 13115 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.