Base Difficulty

Base difficulty: Level 19 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: 264 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
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 1054.19 123 100% 123 1
20th_books 967.93 135 100% 135 1
wiki_vital 484.49 187 100% 187 1
wiki_math 282.77 477 100% 477 1
wiki_geography 485.63 221 100% 221 1
wiki_biology 438.53 254 100% 254 1
wiki_modern_life 598.40 159 100% 159 1
early_modern_science 715.04 146 100% 146 1
religious_translated 492.48 240 100% 240 1
cooking 176.75 732 100% 732 1
legal_scotus 227.14 558 100% 558 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.