Base Difficulty

Base difficulty: Level 329 edit

Level distribution for noun (knowledge_domain): 19: 4 329: 28 1000: 13 1010: 4 1030: 2 1040: 2 1050: 2 1060: 14 1080: 4 1110: 24 1120: 3 1399: 21

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: 7181 (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 3.98 3423 17% 20000 capped 1
20th_books 1.89 5745 17% 20000 capped 1
wiki_math 0.00 — — — 0
wiki_geography 34.27 987 17% 4000 downrated 2
wiki_biology 9.49 2397 17% 9000 capped 1
wiki_modern_life 0.00 — — — 0
wiki_arts 4.58 4682 17% 10000 capped 1
wiki_society 14.51 2183 17% 9287 downrated 2
wiki_linguistics 6.58 2856 17% 9000 capped 1
wiki_physical_science 0.00 — — — 0
wiki_history 55.87 495 17% 2177 downrated 2
early_modern_science 10.75 2358 17% 9640 downrated 2
religious_translated 60.69 320 17% 1764 downrated 2
cooking 0.00 — — — 0
legal_scotus 0.00 — — — 0
eu_parliament_debates 0.00 — — — 0
openstax_science 5.75 3449 17% 11000 capped 1
openstax_society 23.75 1817 17% 5812 downrated 2
wpa_life_histories 0.84 9669 17% 20000 capped 1

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.