Base Difficulty

Base difficulty: Level 1030 edit

Level distribution for noun (material_substance): 19: 1 135: 1 179: 25 180: 26 184: 23 278: 2 314: 1 1000: 1 1020: 1 1030: 1 1040: 6 1050: 3 1078: 4 1090: 3 1100: 1 1399: 23

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: 1154 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cambridge_yle Movers (2 of 3) 750
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 0.00 — — — 0
20th_books 0.00 — — — 0
wiki_math 0.00 — — — 0
wiki_geography 79.43 753 33% 1681 downrated 2
wiki_biology 18.64 2438 33% 7314 downrated 1
wiki_modern_life 90.24 602 33% 1443 downrated 2
wiki_arts 921.74 51 33% 106 downrated 3
wiki_society 74.10 995 33% 1870 downrated 2
wiki_linguistics 27.95 2278 33% 4099 downrated 2
wiki_physical_science 32.38 2151 33% 4182 downrated 2
wiki_history 370.23 108 33% 255 downrated 2
early_modern_science 23.03 1660 33% 4980 downrated 1
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 7.42 6079 33% 9706 downrated 2
eu_parliament_debates 0.00 — — — 0
openstax_science 12.05 3310 33% 9930 downrated 1
openstax_society 27.97 2401 33% 4539 downrated 2
wpa_life_histories 2.32 8474 33% 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.