Base Difficulty

Base difficulty: Level 15 edit

Level distribution for adjective (quality): 15: 5 16: 5 18: 23 19: 43 20: 35 21: 1 36: 5 37: 5 38: 5 39: 5

Per-Language Difficulty Overrides

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

Add Difficulty Override
-1 to exclude, 1-100 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 2189.47 62 100% 62 1
20th_books 2208.08 63 100% 63 1
wiki_math 69.68 1554 100% 1554 1
wiki_geography 173.05 731 100% 731 1
wiki_biology 311.52 376 100% 376 1
wiki_modern_life 213.43 582 100% 582 1
wiki_arts 238.16 491 100% 491 1
wiki_society 162.03 770 100% 770 1
wiki_linguistics 211.87 602 100% 602 1
wiki_physical_science 196.49 728 100% 728 1
wiki_history 292.60 354 100% 354 1
early_modern_science 1232.91 89 100% 89 1
religious_translated 426.12 271 100% 271 1
cooking 2874.47 46 100% 46 1
legal_scotus 205.90 623 100% 623 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.