Base Difficulty

Base difficulty: Level 23 edit

Level distribution for verb (existence): 10: 1 23: 1 135: 1 170: 1 179: 1 214: 8 215: 1 220: 1 329: 1 415: 1 475: 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 264.78 552 100% 345 5
20th_books 310.89 538 100% 313 4
wiki_math 0.00 — — — 0
wiki_geography 58.84 3791 100% 1907 2
wiki_biology 68.80 1977 100% 1977 1
wiki_modern_life 51.99 2776 100% 2776 1
wiki_arts 51.71 2538 100% 2538 1
wiki_society 33.70 3838 100% 3838 1
wiki_linguistics 19.65 4320 100% 4320 1
wiki_physical_science 0.00 — — — 0
wiki_history 161.32 1559 100% 804 2
early_modern_science 58.69 2482 100% 1647 2
religious_translated 136.85 1274 100% 730 2
cooking 45.32 1871 100% 1871 1
legal_scotus 108.05 1463 100% 999 3
eu_parliament_debates 29.32 2864 100% 2864 1
openstax_science 34.84 3423 100% 3423 1
openstax_society 87.77 2046 100% 1467 2
wpa_life_histories 601.56 361 100% 179 4

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.