Base Difficulty

Base difficulty: Level 9 edit

Level distribution for conjunction (conjunction_other): 6: 1 9: 5 10: 2 11: 2 13: 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, 1-1299 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 2973.26 47 100% 47 1
20th_books 2465.77 57 100% 57 1
wiki_math 6549.00 17 100% 17 1
wiki_geography 3101.72 26 100% 26 1
wiki_biology 8023.93 14 100% 14 1
wiki_modern_life 11096.41 10 100% 10 1
wiki_arts 5931.24 17 100% 17 1
wiki_society 9034.81 12 100% 12 1
wiki_linguistics 9599.33 12 100% 12 1
wiki_physical_science 7480.07 14 100% 14 1
wiki_history 2802.70 31 100% 31 1
early_modern_science 7151.95 16 100% 16 1
religious_translated 3596.01 40 100% 40 1
cooking 9100.40 11 100% 11 1
legal_scotus 7449.55 14 100% 14 1
eu_parliament_debates 2370.56 46 100% 46 1
openstax_science 6516.63 15 100% 15 1
openstax_society 6824.95 11 100% 11 1
wpa_life_histories 3589.69 40 100% 40 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.