Base Difficulty

Base difficulty: Level 23 edit

Level distribution for adverb (location): -1: 2 18: 4 23: 22 250: 13 1070: 1 1120: 5 1205: 1 1221: 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 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 1595.41 75 97% 77 downrated 1
20th_books 1927.32 68 97% 70 downrated 1
wiki_math 128.81 973 97% 1002 downrated 1
wiki_geography 285.36 384 97% 396 downrated 1
wiki_biology 351.33 312 97% 321 downrated 1
wiki_modern_life 399.97 242 97% 249 downrated 1
wiki_arts 327.60 305 97% 314 downrated 1
wiki_society 254.82 420 97% 433 downrated 1
wiki_linguistics 180.01 680 97% 700 downrated 1
wiki_physical_science 331.13 391 97% 403 downrated 1
wiki_history 318.47 304 97% 313 downrated 1
early_modern_science 620.30 157 97% 162 downrated 1
religious_translated 987.22 127 97% 131 downrated 1
cooking 436.97 343 97% 353 downrated 1
legal_scotus 147.38 856 97% 882 downrated 1
eu_parliament_debates 372.53 322 97% 332 downrated 1
openstax_science 487.94 216 97% 222 downrated 1
openstax_society 386.92 298 97% 307 downrated 1
wpa_life_histories 1843.29 75 97% 77 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.