Base Difficulty

Base difficulty: Level 322 edit

Level distribution for adverb (indefinite_frequency): 322: 2

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: 800 (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 15.56 4735 100% 4735 1
20th_books 7.99 7266 100% 7266 1
wiki_math 328.22 422 100% 422 1
wiki_geography 134.16 1013 100% 1013 1
wiki_biology 554.39 187 100% 187 1
wiki_modern_life 513.26 184 100% 184 1
wiki_arts 218.63 572 100% 572 1
wiki_society 235.28 512 100% 512 1
wiki_linguistics 420.16 290 100% 290 1
wiki_physical_science 399.53 325 100% 325 1
wiki_history 72.14 1902 100% 1902 1
early_modern_science 94.88 1233 100% 1233 1
religious_translated 20.11 4023 100% 4023 1
cooking 0.00 — — — 0
legal_scotus 31.16 3365 100% 3365 1
eu_parliament_debates 0.00 — — — 0
openstax_science 250.03 550 100% 550 1
openstax_society 105.73 1318 100% 1318 1
wpa_life_histories 6.41 8188 100% 8188 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.