Base Difficulty

Base difficulty: Level 160 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: 6748 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
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 5.19 4573 17% 14305 downrated 2
20th_books 4.70 4408 17% 14906 downrated 2
wiki_math 0.00 — — — 0
wiki_geography 32.73 1187 17% 4266 downrated 2
wiki_biology 0.00 — — — 0
wiki_modern_life 0.00 — — — 0
wiki_arts 47.19 721 17% 2796 downrated 2
wiki_society 49.72 796 17% 2684 downrated 2
wiki_linguistics 0.00 — — — 0
wiki_physical_science 0.00 — — — 0
wiki_history 32.31 1070 17% 4100 downrated 2
early_modern_science 8.80 3114 17% 10400 capped 2
religious_translated 42.65 479 17% 2464 downrated 2
cooking 0.00 — — — 0
legal_scotus 0.00 — — — 0
eu_parliament_debates 0.00 — — — 0
openstax_science 0.00 — — — 0
openstax_society 10.82 3529 17% 11000 capped 2
wpa_life_histories 1.01 9402 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.