Base Difficulty

Base difficulty: Level 3 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: 804 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cambridge_yle Starters (1 of 3) 325
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 269.62 391 100% 374 2
20th_books 335.04 330 100% 314 2
wiki_math 0.00 — — — 0
wiki_geography 0.00 — — — 0
wiki_biology 415.79 440 100% 309 2
wiki_modern_life 151.35 915 100% 915 1
wiki_arts 61.86 2238 100% 2238 1
wiki_society 48.71 2865 100% 2865 1
wiki_linguistics 0.00 — — — 0
wiki_physical_science 61.72 2291 100% 2291 1
wiki_history 44.96 3028 100% 3028 1
early_modern_science 109.68 1457 100% 1020 2
religious_translated 110.22 950 100% 950 1
cooking 47.32 1832 100% 1832 1
legal_scotus 6.07 9003 100% 9003 1
eu_parliament_debates 0.00 — — — 0
openstax_science 164.06 876 100% 876 1
openstax_society 60.71 2242 100% 2242 1
wpa_life_histories 245.47 465 100% 432 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.