Base Difficulty

Base difficulty: Level 330 edit

Level distribution for noun (artwork_artifact): 330: 48 360: 1 405: 2 1000: 39 1030: 1 1040: 2 1120: 2

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
basic_english Extended (2 of 2) 1600
cefr A2 (2 of 6) 2100

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 49.83 2321 100% 1597 2
20th_books 45.08 2449 100% 1658 2
wiki_math 296.62 591 100% 434 2
wiki_geography 74.06 2745 100% 1586 2
wiki_biology 129.99 1760 100% 1046 2
wiki_modern_life 432.79 368 100% 273 2
wiki_arts 478.96 467 100% 239 2
wiki_society 254.65 1012 100% 511 2
wiki_linguistics 52.77 3117 100% 1779 2
wiki_physical_science 202.46 1384 100% 713 2
wiki_history 203.19 1073 100% 624 2
early_modern_science 128.12 1238 100% 862 2
religious_translated 142.96 1023 100% 690 2
cooking 0.00 — — — 0
legal_scotus 41.22 3269 100% 2161 2
eu_parliament_debates 38.38 2868 100% 1870 2
openstax_science 625.95 257 100% 191 2
openstax_society 222.94 1104 100% 633 2
wpa_life_histories 7.09 7677 100% 7677 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.