Base Difficulty

Base difficulty: Level 304 edit

Level distribution for conjunction (conjunction_other): 6: 4 9: 4 10: 1 11: 2 304: 4 1399: 1

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: 264 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr A2 (2 of 6) 2100

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 124.87 765 100% 765 1
20th_books 99.91 990 100% 990 1
wiki_math 466.57 299 100% 299 1
wiki_geography 633.52 167 100% 167 1
wiki_biology 996.18 95 100% 95 1
wiki_modern_life 702.68 129 100% 129 1
wiki_arts 710.96 136 100% 136 1
wiki_society 617.21 156 100% 156 1
wiki_linguistics 876.00 129 100% 129 1
wiki_physical_science 686.26 142 100% 142 1
wiki_history 776.64 121 100% 121 1
early_modern_science 328.81 329 100% 329 1
religious_translated 216.60 499 100% 499 1
cooking 93.53 1195 100% 1195 1
legal_scotus 444.64 258 100% 258 1
eu_parliament_debates 333.60 370 100% 370 1
openstax_science 543.19 191 100% 191 1
openstax_society 620.46 182 100% 182 1
wpa_life_histories 127.95 810 100% 810 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.