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: 3382 (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 Flyers (3 of 3) 1200
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 58.78 647 20% 1645 downrated 2
20th_books 54.27 685 20% 1851 downrated 2
wiki_math 74.37 602 20% 1836 downrated 2
wiki_geography 0.00 — — — 0
wiki_biology 0.00 — — — 0
wiki_modern_life 41.99 1042 20% 3443 downrated 2
wiki_arts 33.76 1516 20% 4128 downrated 2
wiki_society 17.86 2770 20% 7801 downrated 2
wiki_linguistics 6.56 3283 20% 9000 capped 1
wiki_physical_science 37.05 1252 20% 3938 downrated 2
wiki_history 11.42 2403 20% 9000 capped 1
early_modern_science 25.44 1414 20% 4504 downrated 2
religious_translated 26.21 1290 20% 3860 downrated 2
cooking 0.00 — — — 0
legal_scotus 33.68 1143 20% 3745 downrated 2
eu_parliament_debates 88.03 387 20% 1403 downrated 2
openstax_science 97.33 380 20% 1348 downrated 2
openstax_society 42.74 1027 20% 3282 downrated 2
wpa_life_histories 30.03 1179 20% 3260 downrated 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.