Base Difficulty

Base difficulty: Level 179 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: 772 (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 226.64 503 100% 434 2
20th_books 235.77 582 100% 428 2
wiki_math 0.00 — — — 0
wiki_geography 29.47 4419 100% 4419 1
wiki_biology 26.86 4351 100% 4351 1
wiki_modern_life 374.52 351 100% 308 2
wiki_arts 140.08 956 100% 956 1
wiki_society 24.27 5141 100% 5141 1
wiki_linguistics 0.00 — — — 0
wiki_physical_science 196.39 735 100% 735 1
wiki_history 47.52 2876 100% 2876 1
early_modern_science 458.06 255 100% 231 2
religious_translated 0.00 — — — 0
cooking 451.75 437 100% 316 2
legal_scotus 0.00 — — — 0
eu_parliament_debates 10.83 5374 100% 5374 1
openstax_science 91.37 1513 100% 1513 1
openstax_society 28.08 4090 100% 4090 1
wpa_life_histories 106.84 1393 100% 851 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.