Base Difficulty

Base difficulty: Level 1399 edit

Level distribution for verb (destruction_action): 110: 1 120: 1 160: 1 172: 1 179: 1 265: 1 299: 1 314: 1 470: 4 1078: 1 1399: 7

Per-Language Difficulty Overrides

No difficulty overrides set. The base difficulty level will be used for all languages.

Add Difficulty Override
-1 to exclude, 1-1399 for level
Frequency and Tier Signals
Combined Frequency Rank: 1095 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr B1 (3 of 6) 4200

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 37.09 1779 44% 2265 downrated 3
20th_books 25.89 2529 44% 2962 downrated 3
wiki_math 87.01 2544 44% 930 5
wiki_geography 25.98 2389 44% 5375 downrated 1
wiki_biology 108.39 1186 44% 1281 downrated 3
wiki_modern_life 204.36 980 44% 697 5
wiki_arts 67.50 1416 44% 2002 downrated 3
wiki_society 68.95 2218 44% 1932 3
wiki_linguistics 22.54 2363 44% 5317 downrated 1
wiki_physical_science 105.83 1130 44% 1344 downrated 3
wiki_history 54.07 1594 44% 2483 downrated 2
early_modern_science 74.89 1073 44% 1477 downrated 3
religious_translated 50.45 1463 44% 1981 downrated 2
cooking 980.85 93 44% 158 downrated 3
legal_scotus 213.79 1294 44% 517 8
eu_parliament_debates 116.95 2276 44% 731 6
openstax_science 198.12 1048 44% 647 6
openstax_society 120.09 2094 44% 1018 5
wpa_life_histories 27.45 2061 44% 2781 downrated 3

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.