Base Difficulty

Base difficulty: Level 180 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 17.85 3463 80% 4355 downrated 1
20th_books 27.19 2352 80% 2958 downrated 1
wiki_math 0.00 — — — 0
wiki_geography 0.00 — — — 0
wiki_biology 0.00 — — — 0
wiki_modern_life 49.95 2323 80% 2921 downrated 1
wiki_arts 141.48 877 80% 893 downrated 2
wiki_society 0.00 — — — 0
wiki_linguistics 0.00 — — — 0
wiki_physical_science 26.27 3646 80% 4585 downrated 1
wiki_history 29.94 3260 80% 4099 downrated 1
early_modern_science 21.05 3516 80% 4421 downrated 1
religious_translated 0.00 — — — 0
cooking 21.62 2589 80% 3256 downrated 1
legal_scotus 3.81 9589 80% 12058 downrated 1
eu_parliament_debates 0.00 — — — 0
openstax_science 0.00 — — — 0
openstax_society 0.00 — — — 0
wpa_life_histories 35.27 1958 80% 2462 downrated 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.