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 Starters (1 of 3) 325

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 75.35 1355 100% 1134 2
20th_books 33.33 3082 100% 2133 2
wiki_math 0.00 — — — 0
wiki_geography 85.31 1546 100% 1546 1
wiki_biology 78.94 1738 100% 1738 1
wiki_modern_life 52.20 2764 100% 2764 1
wiki_arts 0.00 — — — 0
wiki_society 0.00 — — — 0
wiki_linguistics 0.00 — — — 0
wiki_physical_science 188.59 761 100% 761 1
wiki_history 0.00 — — — 0
early_modern_science 142.32 779 100% 779 1
religious_translated 29.73 2893 100% 2893 1
cooking 0.00 — — — 0
legal_scotus 12.49 5763 100% 5763 1
eu_parliament_debates 0.00 — — — 0
openstax_science 26.55 4139 100% 4139 1
openstax_society 0.00 — — — 0
wpa_life_histories 60.59 1555 100% 1555 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.