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: 326 (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 54.64 1639 100% 1639 1
20th_books 74.14 1239 100% 1239 1
wiki_vital 594.23 152 100% 152 1
wiki_math 546.32 248 100% 248 1
wiki_geography 266.26 441 100% 441 1
wiki_biology 1088.10 90 100% 90 1
wiki_modern_life 1283.45 66 100% 66 1
early_modern_science 188.35 578 100% 578 1
religious_translated 24.22 3415 100% 3415 1
cooking 213.01 634 100% 634 1
legal_scotus 41.85 2640 100% 2640 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.