Base Difficulty

Base difficulty: Level 26 edit

Level distribution for adverb (adverb_other): 26: 3 29: 3

Per-Language Difficulty Overrides

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

Add Difficulty Override
-1 to exclude, 1-36 for level
Frequency and Tier Signals
Combined Frequency Rank: 384 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Extended (2 of 2) 1600
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 886.79 141 100% 141 1
20th_books 867.08 155 100% 155 1
wiki_vital 208.55 559 100% 559 1
wiki_math 140.26 937 100% 937 1
wiki_geography 245.70 469 100% 469 1
wiki_biology 336.94 349 100% 349 1
wiki_modern_life 284.12 405 100% 405 1
early_modern_science 469.15 218 100% 218 1
religious_translated 293.79 368 100% 368 1
cooking 492.86 311 100% 311 1
legal_scotus 221.73 570 100% 570 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.