Base Difficulty

Base difficulty: Level 179 edit

Level distribution for noun (material_substance): 19: 1 179: 26 180: 26 184: 24 1000: 1 1020: 1 1030: 1 1040: 6 1050: 3 1090: 3 1100: 1

Per-Language Difficulty Overrides

No difficulty overrides set. The base difficulty level will be used for all languages.

Add Difficulty Override
-1 to exclude, 1-1299 for level
Frequency and Tier Signals
Combined Frequency Rank: — (run python -m storage.admin --calc-ranks to populate)
Tier Signals
Source Tier Rank used
cambridge_yle Movers (2 of 3) 750

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 228.58 500 100% 429 2
20th_books 239.10 572 100% 417 2
wiki_math 0.00 — — — 0
wiki_geography 31.32 3635 100% 3635 1
wiki_biology 27.16 4282 100% 4282 1
wiki_modern_life 375.82 344 100% 302 2
wiki_arts 143.89 886 100% 886 1
wiki_society 24.95 4787 100% 4787 1
wiki_linguistics 0.00 — — — 0
wiki_physical_science 197.16 727 100% 727 1
wiki_history 48.37 2632 100% 2632 1
early_modern_science 448.82 264 100% 237 2
religious_translated 0.00 — — — 0
cooking 445.28 441 100% 317 2
legal_scotus 0.00 — — — 0
eu_parliament_debates 10.88 4930 100% 4930 1
openstax_science 91.26 1513 100% 1513 1
openstax_society 28.02 4086 100% 4086 1
wpa_life_histories 106.78 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.