Base Difficulty

Base difficulty: Level 172 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: 2143 (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 5.80 9283 100% 9283 1
20th_books 6.31 8546 100% 8546 1
wiki_math 0.00 — — — 0
wiki_geography 35.66 3811 100% 3811 1
wiki_biology 29.23 4121 100% 4121 1
wiki_modern_life 28.55 4694 100% 4694 1
wiki_arts 0.00 — — — 0
wiki_society 0.00 — — — 0
wiki_linguistics 0.00 — — — 0
wiki_physical_science 223.65 999 100% 623 3
wiki_history 28.47 4480 100% 4480 1
early_modern_science 112.39 2039 100% 942 3
religious_translated 16.26 4661 100% 4661 1
cooking 644.55 385 100% 229 2
legal_scotus 0.00 — — — 0
eu_parliament_debates 0.00 — — — 0
openstax_science 146.29 1427 100% 862 3
openstax_society 0.00 — — — 0
wpa_life_histories 0.00 — — — 0

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.