Base Difficulty

Base difficulty: Level 1399 edit

Level distribution for noun (body_part): 3: 14 8: 14 125: 1 133: 10 160: 42 1010: 24 1060: 1 1090: 2 1399: 15

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: 7234 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr C1 (5 of 6) 12000

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 1.47 7085 17% 20000 capped 1
20th_books 0.98 9008 17% 20000 capped 1
wiki_math 3.84 3326 17% 8000 capped 1
wiki_geography 0.00 — — — 0
wiki_biology 28.23 1391 17% 4905 downrated 2
wiki_modern_life 33.24 1076 17% 4366 downrated 2
wiki_arts 5.13 4251 17% 10000 capped 1
wiki_society 16.21 2543 17% 8561 downrated 2
wiki_linguistics 4.18 3906 17% 9000 capped 1
wiki_physical_science 58.18 696 17% 2484 downrated 2
wiki_history 0.00 — — — 0
early_modern_science 6.26 2833 17% 10400 capped 1
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 8.70 3051 17% 11552 downrated 2
eu_parliament_debates 28.83 1270 17% 4046 downrated 2
openstax_science 67.70 655 17% 2082 downrated 2
openstax_society 12.32 3272 17% 9879 downrated 2
wpa_life_histories 0.00 — — — 0

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.