Base Difficulty

Base difficulty: Level 300 edit

Level distribution for verb (development): 30: 1 165: 2 170: 1 179: 1 196: 1 249: 1 299: 2 300: 1 329: 1 470: 7 475: 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 Flyers (3 of 3) 1200

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 28.28 4524 100% 2459 2
20th_books 18.85 5692 100% 3119 2
wiki_math 68.67 2378 100% 1275 2
wiki_geography 135.61 1778 100% 957 2
wiki_biology 103.96 2294 100% 1294 2
wiki_modern_life 308.92 793 100% 438 2
wiki_arts 71.84 3303 100% 1737 2
wiki_society 122.85 1783 100% 1098 2
wiki_linguistics 44.39 3603 100% 1998 2
wiki_physical_science 124.62 2189 100% 1109 2
wiki_history 117.15 1951 100% 1096 2
early_modern_science 59.24 2478 100% 1635 2
religious_translated 0.00 — — — 0
cooking 73.69 1934 100% 1074 2
legal_scotus 25.16 4573 100% 2947 2
eu_parliament_debates 384.56 491 100% 306 3
openstax_science 132.39 1610 100% 1007 2
openstax_society 216.18 1078 100% 650 2
wpa_life_histories 25.17 4329 100% 2564 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.