Base Difficulty

Base difficulty: Level 24 edit

Level distribution for noun (building_part): 10: 1 19: 1 24: 16 115: 3 120: 21 1000: 2 1010: 1 1040: 2 1070: 1 1078: 2 1090: 1 1120: 1 1201: 1 1399: 6

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: 1053 (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 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 143.20 668 100% 668 1
20th_books 255.14 424 100% 398 2
wiki_math 20.79 3524 100% 3524 1
wiki_geography 61.30 2293 100% 2293 1
wiki_biology 64.58 2114 100% 2114 1
wiki_modern_life 192.15 946 100% 732 2
wiki_arts 202.85 783 100% 643 2
wiki_society 24.05 5180 100% 5180 1
wiki_linguistics 0.00 — — — 0
wiki_physical_science 72.04 1997 100% 1997 1
wiki_history 40.35 3315 100% 3315 1
early_modern_science 43.28 2518 100% 2518 1
religious_translated 32.71 2767 100% 2767 1
cooking 0.00 — — — 0
legal_scotus 33.60 3194 100% 3194 1
eu_parliament_debates 31.02 2856 100% 2856 1
openstax_science 75.22 1827 100% 1827 1
openstax_society 51.26 2561 100% 2561 1
wpa_life_histories 265.98 467 100% 397 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.