Base Difficulty

Base difficulty: Level 29 edit

Level distribution for adverb (relative_time): 19: 1 26: 3 29: 12

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: 687 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
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 72.94 649 50% 1151 downrated 1
20th_books 124.14 423 50% 741 downrated 1
wiki_vital 411.81 104 50% 214 downrated 1
wiki_math 158.92 439 50% 790 downrated 1
wiki_geography 367.19 142 50% 287 downrated 1
wiki_biology 217.65 256 50% 524 downrated 1
wiki_modern_life 302.30 158 50% 334 downrated 1
early_modern_science 78.26 703 50% 1336 downrated 1
religious_translated 32.88 1516 50% 2784 downrated 1
cooking 20.96 1960 50% 3481 downrated 1
legal_scotus 170.82 354 50% 611 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.